isu: dude, whoa. People have various ways of feeling about all kinds of things. And they'll say all kinds of things about them. Let them. It usually helps. If they're being particularly nasty, casually let them know. No one's being nasty here.
They weren't being nasty, just snidely sarcastic... which got me going more than I should have let it. Sorry guys.
Shan, yeah, publishers are releasing their old games all the time, usually using some verison of MAME to run them. Namco and Williams release museum collections for every generation of consoles. Xbox Live, PSN, and Wii Channel all have arcade sections with the actual old games available (not remakes). However, the way licensing works, it only entitles you to play those games on the platform you purchase it on. It'd be great if there was some itunes like service on PC where we could get our ROMs for a reasonable price, but oh well.
In fact, one of the reasons I built my MAME cabinet was to cure myself of the sickness of endlessly buying arcade collections for the various consoles (I can't count how many times I've bought Smash TV... or Joust). I'd always get excited to play them but they always are a dissappointment with a gamepad.
PS: I just counted how many times I've bought Smash TV:
once on Super NES
once on Midway collection for Dreamcast
once on Midway/Williams Arcade Classics collection for Xbox 1
once on Xbox Live