I do sort of see his point; the problem with video game history as a whole is that it's not as easily accessible as say books or movies. You want to watch a movie from the 1940s? Just get the DVD. Classic book from the 1800s? Same thing. Video games on the other hand aren't that simple. If you want to play, say, Donkey Kong Country, you need to buy an actual SNES in order to play the game, or at least a device that can play the cartridge. This is why emulation has become so big, because it allows you to play virtually everything but at the cost of not playing it on a device (which is why I'm personally not a fan). So classic gaming boils down to buying the device and the game, purchasing and downloading it on a modern gaming platform, or just downloading a free emulator and a free ROM.
However, what I don't agree with is the idea that the industry is only keeping a few well-known available. Have you seen the PS2 classics section on PSN? Some of those games are cult classics that didn't sell well. Hell, Nintendo's done a really solid job with having obscure games on their Virtual Console. The issue then isn't so much just selling the big classic games and more to do with the ongoing debate about whether it's worth buying or just downloading it for free.