For an organization with effectively infinite money, Google is very stingy when it comes entering a new space. Netflix sunk hundreds of millions of dollars on originals from the start. For every hit like House of Cards, there was a flop like Marco Polo, but this is still what kept Netflix relevant to this day. Meanwhile, the only YouTube Original I've heard of is Cobra Kai, and even that seemed relatively low budget.

The same goes for Stadia too. The platform is good enough, but there just isn't much incentive for people to join it.