This is a valid critique of blockchains, and yet it fails to recognize the fundamental value that blockchains provide: censorship resistance. If blockchain platforms do not provide censorship resistance — i.e. they rely on a set number of trusted actors to produce and validate blocks — then we have simply returned to legacy database systems, albeit at the expense of the efficiency that legacy systems like Amazon Web Services provide.
Proof of work elects 3 mining pools which decide which transactions are included in blocks. It has failed at censorship resistance as sigwit is a change to the protocol actively enforced by censoring previously valid bitcoin transactions. Ethereum & Bitcoin have both hardforked to reverse transactions.