Some of what you say is true but I still don't think there's any A implies B. Quality does seem to be down, prices and DLC are up, and some older content just isn't available for purchase at all.
Some of this is bogus though. It doesn't cost any money to make a digital copy, but it costs a LOT of money to make the original. This is like R&D/T&E cost for any manufactured product, so to call it "free" is a little disingenuous. I also agree I agree I don't want to pay full price, but the "potential purchase" is horseshit. If you walk into a department store and pick up a shirt (even if stock is infinite) because you want it but don't think it's cheap enough, that's theft. Sure you can come back when it's on sale and buy it, but a purchase/payment is transactional: if you don't uphold your end, that's not a transaction. Last, while some of us DO just want a way to pay and own in a legit way, you can look at replies to the last comment and find a 1 in 5 example of "I'm never paying, I want it for free" which jacks the prices for the rest of us even if we are just paying a fair share of up front cost.