Time Warner Cable (TWC) will now be offering has a 75 Mbps internet service tier in Dallas, which will cost $90 a month. Dallas based AT&T U-verse also has plans to increase their top speeds to 75 Mbps, so perhaps TWC would like to maintain or increase their market share, since the service territories of both companies overlap in some parts of Texas. In this case, both TWC and AT&T serve Dallas, and there are only so many households to go around.
In Kansas City, TWC has started offering a 100 Mbps tier, in order to effectively compete with Google Fiber, which offers maximum speeds at 1000 Mbps. Among the major cable MSOs, TWC seems somewhat hesitant to raise speeds unless the competition requires them to keep up. As long as competing providers in the same service territory are willing to offer faster service, TWC is willing to match it just to maintain their customer base.
Hopefully, the cable MSO will start offering their 100 Mbps tier to the rest of the country. If the network is already built and customers are willing to pay, there’s really no reason they shouldn’t be able to buy the speed they want.