When 5g will be a big thing and not too expensive, cloud gaming's time will come with good latency and high data transfers
Before that, consoles/pc will still lead.
How fast this will happen will be different from country to country. Especially data caps are very different. Many countries have none at all.
But Amazon and Google will implement the " Play this game now" option under every Twitch stream and YouTube video in the future. That will push it a lot