Wrong end of the blockchain
The very nature of blockchain is decentralisation. So by definition there are not going to be companies making loads of money (apart from the icos to get them off the ground). Centralisation of profit is what Facebook et al enjoy at your expense. A company is a centralised entity so you are studying the wrong end of the stick as it were. You'd do better to ask end users of say the Brave browser or Dent mobile data exchange about their experience; has it made or saved them money? Of course there are a lot of frauds and fakes about and it might take ten years for the dust to settle and see what works best centralised and what works best decentralised.