Dude, read the first part of my statement about your weak point and start to think about Microsoft as a company that wants to earn money.
It's proven since the rise of Spotify and Netflix that people are more willing to pay 9.99/Month (119.88/Year) than 100 bucks a year for 2-3 games (which is the reason why there are also subs like EA/Origin Access, UPlay+ etc).
And trust me - Microsoft tries to shift the attention from sales numbers to "people who have played the game" or "people who are using Xbox live regularly" for a couple of years now.
Netflix is a cash burning operation, Spotify can probably squeeze out some money until the artist revolt, but huge money... not really. The issue with your Netflix example is, Netflix loses quite a bit of money.... they are basically selling a dollar for 50 cents with really no way of pushing prices up.
Nothing really wrong with rental services, I mean the local video/game store has been around for 30 years. Just not sure we'll see a huge shift anytime soon as the money is in digital sales.
think about Microsoft as a company that wants to earn money.
Oh, I agree there i.e. service subscription model, but just because one is trying to sell something doesn't mean there is a willing customer, which is why Microsoft shutdown Groove Music (formerly Xbox Music, which was formerly Zune Music) i.e. no customers.
I think all these rental/streaming are okay to experiment with but I think there is more talk than they'll have customers unless they go to the sell a dollar for 20 cents business model in the foreseeable future.
Either way not sure I see the big deal - I mean its just a distribution model, like why do I care if tomatoes show up at the grocery by truck or rail? At the end of the day, not much is really gained unless they go to the burning cash route of Netflix. Even if rental/streaming services become the norm, be prepared to pay more not less... eventually.... every big publisher will have the own service.
Generally speaking, I think people get excited about games and not so much about "services", there really is only so many games a person can play in a year.