The DeFi ecosystem is already huge, and there are more, faster, and more reliable solutions than the Ethereum blockchain. The outstanding issues are how many computations can happen at once, and how many results can be stored. Ethereum is not scalable to a high level, and theres the risk of congesting the Ethereum network for other transactions and computations by using too much gas. It is a victim of its own success.
Other faster, cheaper successors to Ethereum also offer parallel or competing versions of DeFi.
Those will lead the future trends of the blockchain industry.
Let's hope Komodo will be amongst those if not the leading one. :)