If you don’t retain some kind of actual ownership, they will not be allowed to use terms like “buy” or “purchase” on the store page button. I hope there aren’t huge holes in this that allow bad actors to get around it, but I certainly loathe the fact that there’s no real way to buy a movie or TV show digitally. Not really.
EDIT: On re-reading it, there may be huge holes in it. Like if they just “clearly tell you” how little you’re getting when you buy it, they can still say “buy” and “purchase”.
Well, as the guy falling from the top of the Empire State Building was overheard saying on his way down: “well, so far so good”.
Or as the common caveat given to retail investors goes: past performance is no predictor of future results.
“So far” proves nothing because it can be “so far” only because the conditions for something different haven’t yet happenned or it simply hasn’t been in their best interest yet to act differently.
If their intentions were really the purest, most honest and genuine of all, they could have placed themselves under a contractual obligation to do so and put money aside for an “end of life plan” in a way such that they can’t legally use it for other things, or even done like GoG and provided offline installer to those people who want them.
Steam have chosen to maintain their ability to claw back games in your library whilst they could have done otherwise as demonstrated by GoG which let you download offline installers - no matter what they say, their actions to keep open the option of doing otherwise say the very opposite.