Evidently Phil Harrison with Google had a interview roundup in the UK with press. Eurogamer was there...
https://www.eurogamer.net/articles/2019-06-27-dont-expect-games-to-be-cheaper-on-google-stadia
They're going to have a hard time convincing folks that their service is worth paying full price for the game.
Tommy McClain
It had been unclear whether these games would cost full-price on Stadia, given you're simply streaming them as opposed to buying a disc or downloading the game onto a hard-drive. But in a roundtable interview with UK games press this morning, attended by Eurogamer, Stadia chief Phil Harrison indicated Stadia games will cost the same as they do on other platforms such as the PlayStation 4 and Xbox One - that is, they won't be cheaper.
"I don't know why it would be cheaper," Harrison replied when Eurogamer asked.
So, how does Stadia justify charging full-price for a video game you can only stream? By making it available to play on any screen, Harrison said.
"The value you get from the game on Stadia means you can play it on any screen in your life - TV, PC, laptop, tablet, phone," he said. "I think that is going to be valuable to players."
That, and, "In theory, the Stadia version of a game is going to be at the highest-possible quality of innovation and sophistication on the game engine side."
Harrison couldn't, however, confirm exactly how much Stadia games will cost. Instead, he directed us to the publishers of the games themselves. "The publisher or the developer is in as much control of the prices as we are, so it's a bit difficult for me to say what the prices will be right now," he said. "But, we're obviously going to be very aware of prevailing prices in the marketplace."
https://www.eurogamer.net/articles/2019-06-27-dont-expect-games-to-be-cheaper-on-google-stadia
They're going to have a hard time convincing folks that their service is worth paying full price for the game.
Tommy McClain