But, anyway, I do not think your analysis captures the situation in the right way. The free-rider problem, where users contribute no/negligible code or money back to FOSS, is the heart of the exploitation; Tivoization or cloud SaaS-ification are merely forms of free-riding. Other forms of the free-rider problem would have eventually become a thorn in the side of FOSS even if those two things had never happened and there is no way to plug that hole in the concept of copyleft.

And I maintain that was entirely predictable (and it was predicted by many a few decades ago!): there is no reason for a business owner to contribute back to FOSS when not contractually obligated to do so. Like the fable of the scorpion and the frog, even if it's valid to do so it's kind of pointless to blame capitalists for doing what everyone knew what they were going to do all along.