This sounds like an economic problem with no obvious solution: network effects => monopoly => "optimising" for typical user. Where there isn't a monopoly (or anything close to a monopoly) you find different firms specialising in different ways. For example, small independent restaurants survive by being distinctive, not by trying to imitate McDonald's.
YouTube and LinkedIn are practically monopolies. Netflix isn't a monopoly in the same way but you usually don't have a choice of streaming services for watching a particular film or series so it's different from being able to buy the same cheese or the same wine from any of several different supermarkets.