First PC games don't have to specifically support a TV in order to be played on a TV. All new TVs come with a DVI, VGA, S-Video, or Composite port(s). And PC video drivers all come with TV support native. You can buy any of the cable configurations 6' long for $5 and a 30' is between $10 and $20 depending on which type of cable your needing.
Second you can go to Walmart and buy a $450 computer that will run most games on medium to low graphics and they will still look better than console games due to the fact that PCs have better processing power even if your using an on-board video card.
and Last anyone who is buying these games probably has a job and is out of the house for at least 8 hrs a day. Start it to DLing in the morning and when you get home hit the "Play" button...really not a problem. I downloaded Bad Company 2, which happens to be over 8GB, while I was at work one day and I live in a rural area where the broadband may say its 10MB down but every time I check it is less than 6.5MB at the most.