>Is this a logical conclusion or is this correlation in a time when companies in myriad industries are pushing rent over buying because margins are so much better?

I think both, I would argue that right now, giving hardware into the hands of your customer presents a much bigger risk nowadays. Streaming is obviously the better option for margins, and now it is basically the only option to keep the product under control. Also now that consumer GPU/memory is getting more and more expensive, I think it has become realistically the only way forward.