When you think about privacy violations, do you think about 1984 style mass surveillance? Many people do. But there are other large and powerful entities that can commit another form of privacy infraction — that against the business owner. A larger company that provides a service to a smaller one can use its access to the smaller company’s business data as a way to compete with the smaller, dependent business.

This is called “opportunistic behavior” aka ‘screwing partners over’, and happens specifically when two businesses enter into a contract with each other but are both serving customers in the same industry, and one decides to take advantage

And what does this have to do with crypto?

Crypto is built on blockchain technology, built for decentralization. Platforms such as marketplaces can be built on blockchains, which are resistant to centralized power imbalances where only central participants receive benefits. In the case of marketplaces, both the sellers and buyers can own the platform so that the sales channel, Amazon in our example, does not make major decisions that only benefit it.

The key detail that gives sales channels this power to undermine its sellers is ownership and control over sales data. An alternative is to provide a medium for sellers and buyers to transact on, where sales data is not automatically shared because there is no central ‘owner’ of the platform, while there is still a way for over-arching decisions to be made.

https://medium.com/@cryptoramble/how-amazon-is-bad-for-business-31d126d9be6