From what I've seen it's not really those "in the know", but rather those convinced by half-assed explanations of what paid VPN subscriptions do by YouTube sponsorships.
The cost of the work required to provide those services is marginal - as clearly proven by the big profit margins.
Oh and those "free" services are paid by selling your privacy.
As for Market dominance, since when was being popular and making products a lot of people like and value somehow abhorrent?
Please argue in good faith...
Surely market abuse should allow them to significantly expand profitability, but it hasn’t. Overall profits yes, but that’s just because they have higher sales now.
There are some companies I would agree do abuse their positions significantly to distort markets. Google and Facebook have been caught explicitly doing so.