If a gamer does not have a powerful PC, then he does not have licenses for new games. How will this issue be resolved.
there is no issue to be resolved?
he does not need to buy a powerful pc, he only need to have the games he want to play and the playkey streaming service. thats all.
And even some games as I understood it will not be necessary to buy
There you can play only in the games that they have on the site (since these games are installed on their gaming computers), and games need to be purchased to have a license key.
is there any info that you can maybe link your steam account with their service

? to make a license key check?
would be really great, dont you think so

?
I suppose you can link your Steam account. On the website, it is always written, which games you can play from which sources (e.g. Steam).