Consumers can still by products they can repair themselves if they value such an aspect of a product. I'd it is an extra cost than that gives a competitive advantage to other products who aren't vertical integrated like that.
That's only true of there aren't market implications to this newly-introduced rent-seeking model.
If your position is that market competition is what will overcome the negative implications of anticompetitive behavior, your position is logically incoherent.
The reality is that the only way to be competitive on price (and thereby survive as a business) is to do your own rent-seeking. We can all plainly see that this is how it has played out in reality. No business can actually rely on the promise of right-to-repair obsessed consumers to keep them afloat.