Blockchain

Well hello,
I'm still learning about the blockchain day by day and it's quit interesting to try to "predict" the future use of this technology. But i have my own doubts.(maybe I'm still lacking in research)

1. If everything will be decentralised, how will you make the profit out of it?(business point of view)
2. If you have million dollar today to work on blockchain technology what business would you get into to get appropriate profit in near future?(Of course excluding those exchange of cryptos)
   P.S: You are not a tech company and just want to enter in the field.