Why Netflix can't sit down with Disney and merge the two streaming services. Disney is amazing at making content, so is Netflix at the moment.
They could take a look at the present, their market cap, debt and so on and structure a solution that would:
1. Make Netflix the best streaming service with the best content, also best variety as it would have all of Disney
2. Fix the negative cashflow from Disney and its streaming service AND give them a good amount of control of Netflix, and its profits
I doubt Amazon or Apple would be able to compete against Netflix in that sense. Their content is also good, but hard to compare against a Netflix+Disney combo. They would easily eat a lot subscribers from the competition.
Also, business-wise, it would make a lot of sense for Disney. They wouldn't need to support their crappy app or do any engineering work at all, because they aren't anywhere as close as Netflix in that sense, and they will need at least a decade to get where Netflix is, maybe never, as they don't seem to be able to know how to run a technology company AT ALL.
Also users would be happier and thankful again, as they don't need to pay for so many services. Right now it is a fucking pain in the ass.