There are a lot of gamers out there who are both PC and console and switch between buying games for the PC or the console. I do exactly that depending on which games my non-PC gaming friends choose for the PS4. For shooters, since I can't use a controller worth a flip for that, I go PC. But for racing games, I go with the PS4 because I have a wheel that works with both PC and PS4.
Also, I have a GOG and Origin account for other games like the Battlefield series, Witcher 3, and Fallout 4. Steam has the best community features, but GOG has no DRM. Origin has terrible DRM but games can be found at a huge discount. I do however miss the good old days of PC gaming where you could walk into a store and buy a boxed retail copy of a PC game and not have to use any online gaming portal at all. Plus, I just like having physical media in my possession. I only buy my console games in physical form, not download.
And everyone can just forget about Half Life 2 Episode 3 and HL3. An insider leaker years ago said that Valve scrapped the idea. He basically said every time a team was formed for the next HL project, it fell apart and the project died and it got harder and harder to get another one started. The powers to be at Valve got tired of wasting money and threw up their hands. It's long past time we all just admit Valve died as an active game developer after Portal 2.