To reach a large audience, Playkey should consider expanding the supported devices. Not only computers running Windows, but others. In the future, it would be nice and tablets for Android. Now there are a lot of portable input devices, so there will be no problems with running games.
I think by now they only concentrate on PCs, because it's much larger customer segment, and at this point it's better to put resources fully into one thing, but later I think it would make sense for them to expand.
does it only support windows or mac too?
Supports windows and mac. In addition, you can play from your phone and tablet. But there I think I need a joystick
That is a clear advantage compared to Playstation Now, which is only supported on PS4 and Windows PC. Especially the Mac support.
Besides you need playstation 4 for playing playstation now, it is already the newest console. And you won't use playstation now in ps4 for ps5 games.
With playkey you can play newest games in a 5-year-old crappy computer.
I think that is the biggest advantage.
On the other hand, Playstation NOW is only for very old games (PS3 era), so no one gives a damn about it :-)
I don't think that the two platforms (pc - consoles) can be mixed, because if you want to play a lot of console games ... you need to buy the actual console for that. Often the games are platform exclusiv. Playkey doesn't help to solve this problem (and it just can't solve it). It is really all about ... playing new games on old hardware. I am curious to see which of the actual competitors will succeed in the market. Of course, when Playkey will be able to get a lot of money through the ICO, they have an advantage towards their competitors.