Why does Microsoft xbox scorpio need exclusives when the top best selling games are multiplatform?

[Snoopy]

Conina said:

Snoopy said:

But most people don't game on a PC. People can build a powerful pc right now and play all the best selling games on xbox one and ps4 significantly better in graphics and fps.

Around 200 million active Steam accounts, League of Legends has 100 million montly active users...

Sorry, was referring non f2p games and AAA 60 dollars games. COD isn't doing too well on steam last I checked or the fact games like FF, Destiny and Madden aren't on PC.