Having a PC to check your email, order off amazon, and download recipes is dying. Buying a PC and using it for video games is raising. The PC hardware is getting more expensive, but the upgrade cycles are also extending. If you look at the steam hardware survey most gamers are 1-3 GPU generations behind.
If you look at the total cost of ownership PC gaming is not awful compared to consoles. It's higher, but not as high as the initial price tag makes it look. There is no monthly Playstation Plus or Xbox Live subscription. These can run between $80/yr to $240/yr. PC games often have access to deeper discounts. The PC has additional utility, and modern PC components are holding exceptional resell value.
2. DRM Free still matters with multiplayer games. Minecraft is a perfect example, where you can run your own client/server and play with people, and there really doesn't need to be any other middle man involved.
3. With how good home internet is now, it's not a big deal to host game servers from your home on an old computer. Running big central servers really only matters if you care about matchmaking or games with a lot of simultaneous players.