Yeah, super-irritating. I bought about a dozen movies through Google Play before I realized that their platform was going to fail.
I've been eye-ing a lot of movies on Google Play recently. Wasn't sure about making the jump, but now I'm curious. What makes you think they're going to fail? Any big warning signs?
In my case, I lost access to one of my Google accounts, for no apparent reason, and I have been unable to regain access. The movies I have are actually attached to my other account, but the message seems clear--they can go away at any time with no recourse.
In principle this is true for Amazon, Apple, and other Play competitors. In practice, I haven't heard of such cases, and because their economic model is different, this seems a lot less likely, to me.
More broadly, Google has a track record of discontinuing services, which also makes me nervous.