Well at this point in time, blockchain development is concentrated around just a few projects with Ethereum IMO leading the pack. Projects built on top of existing blockchains like Ethereum are clearly the future. Usually these projects deploy a token of value that can reside inside an existing and secure blockchain like Ethereum. Some examples of cool projects like these are Augur, Golem, Gnosis, Melonport, Chronobank, Maker DAO and many more in the works.
The important thing here being blockchain development becoming separate from the application development. For example, there is no need for the Augur project to build and implement their own blockchain (which would be riddled with bugs most likely as new apps won't be able to replicate the security of established blockchain platforms), they can simply build their application on top of Ethereum utilizing its consensus and security platform.