They will likely allow try before you buy, because people will buy, download and try and refund. May as well lower the barriers on both sides to decrease player pain, and decrease the costs of labour for MS.
True, but I'm not convinced this for games outside the Game Pass service. How do you handle achievements, is there a specific time limit, etc. I could see it coming later. But for right now the easiest thing to do is put the Game Pass web browser version into the dashboard & call it a day.
Tommy McClain