Companies will cease paying google and facebook since they do not control the attention. If you are on blockchain right now, advertisers cannot get to you without permission. At some point there will be methods developed where you can opt-in to see ads.

Big corporations are already at risk of losing a great deal of power. DTube for example, is a site where videos are posted without censorship. Hence any voice can be heard. This really affects the MSM that delivers the politically correct message.

Banking is under intense fire from decentralized exchanges and other financial systems. BTS is looking to put a major hurting on them.

Some companies will adapt, others will not. There still will be many forms of business done as they presently are but there are also going to be radical changes because of blockchain.

Earning tokens whether from a basic income like the link I posted to manna, from Steem, from bitradio, from Sia or a host of others, that is the future...people will choose where they put their attention and will be compensated for it.