Defi and NFTs will not only be important elements in the cryptospace, I reckon Defi will be the main element that will serve as basic infrastructure for all digital items created in the cryptospace. This will include NFTs as mentioned and will also serve cryptocoins like Bitcoin, Ethereum, other altcoins and stablecoins. Defi can also serve casinos, DAOs and many other usecases.
Although they will exist and gradually become important components in crypto ecosystem, there will be small parts of DeFi and NFT projects will survive with market bearish test. Because most of them are created with unsolid idea and models so the longer they run, the weaker they become. The bigger their platform becomes in hype period of bull market, the more vulnerable they are in bear market because crash will be bigger.
Before I had a wider understanding about Defi, I thought it was only another new scam in the cryptospace that will be forgotten. This is because I thought Defi would try to serve real world assets of value that will be tokenized. I was clearly very wrong in this type of thinking.
DeFi and NFT projects and ecosystems must create good economies themselves. If they can not do this, their ecosystems will collapse because when new users won't join, the momentum of growth will be broken that will trigger reveal of their weaknesses. When investors realize about that, when price start to collapse, it won't stop and can not be stopped.