Comcast (NASDAQ: CMCSA) is the nation’s largest cable television and Internet service provider in terms of number of customers served. Comcast served 23.6 million cable customers in 39 states, 15.9 million high-speed Internet customers, and 7.6 million voice (phone) customers and passed over 51.2 million homes and businesses across 39 states.
In December 2009, General Electric Company (GE) gave Comcast a 51% stake in its NBC Universal division. In addition to $6.5 billion in cash, Comcast will merge its cable networks and web assets, valued at $7.25 billion, with NBC Universal. The deal was one of the largest in recent media business history, and gave Comcast additional profitable cable franchises. NBC Universal was the segment of GE that had the highest operating margin for five of the past six years, and as such, Comcast benefits a lot from the deal. Further, many analysts believe that the once-powerful NBC Universal will thrive again under Comcast with programming and a focus on digital initiatives like Hulu and the large number of cable channels that are part of the deal.
Comcast is the nation's largest provider of cable services by number of subscribers, offering a variety of entertainment, information, and communication services to residential and commercial customers. The company's largest operating segment is its Cable Division, which includes primarily its video, Internet, and phone services. Comcast serve over 23.6 million video customers, 15.9 million high-speed Internet customers, and 7.6 million phone customers. In addition to its Cable Division, Comcast also earns revenue through its Programming Division.
With more than 85%  of television owners already paying for cable or satellite services, the number of new potential cable customers is limited. New homes are an important source of new customers for cable companies and as a result, growth in the cable industry is closely tied with growth in the housing market. Furthermore, the company believes that weakened consumer spending in 2010 will further slow expansion of its Cable services.
Comcast's already large customer base--the largest in the industry--means that their best future customers may already be in their base. Given the limited universe of potential new cable customers, a significant growth area is selling to their current cable customers other services, namely Internet and voice services. Comcast brands this strategy their "Triple Play," otherwise known as bundling.
Bundling is the marketing strategy of cross-selling customers across cable, Internet, and voice services. Comcast's "Triple Play" and costs approximately $99 per month. Consumers benefit because they have one consolidated monthly bill, and one company to deal with if there are problems. However, this strategy also increases the amount of competitors that Comcast must face, including Verizon Communications (VZ) and AT&T (T). Furthermore, Comcast is feeling similar pressure as its phone service counterparts, as a secular shift towards mobile phones reduces the amount of households that use a traditional phone line.
Cable providers all over the U.S. are requiring their subscribers to shift to new digital systems. RCN has reached 100% digital penetration in New York, Philadelphia, Washington DC, and Chicago. Comcast subscribers, primarily in the Washington D.C. area, have been forced into this transition as well. The benefits for Comcast are obvious: it can offer more channels with a digital platform. Many customers, however, are upset about losing the lower priced analog option. 
Congress is considering legislation that would allow broadband Internet providers--like Comcast--to charge for preferred delivery of digital content. “Net neutrality” advocates are lobbying Congress to treat all web content the same, as is the current standard. Comcast and other Internet providers claim they should be able to sell premium service to larger users of their networks, since they are investing heavily to build and maintain such networks. If legislation is passed to prevent Comcast from charging premium prices for differentiated delivery, it would limit Comcast's future revenue growth.
Comcast's focus on bundling widens the scope of competition beyond cable companies to Internet service providers and voice companies. Comcast's main competition in cable TV is from both traditional cable television providers like Time Warner (TWX) and satellite providers such as DirecTV (DTV) and Dish Network (DISH). In previous years, Comcast has lost customers to the satellite providers, who have aggressively pursued new customers. With the Triple Play package, the company now competes on many fronts with companies like AT&T (T) and Verizon Communications (VZ).