It doesn't seem very possible in the current structure. Nowadays, every project is working with its main net work and the dream of building the Blockchain network. Even Binance is working for that. They want to create a blockchain network which belongs completely them.
That's why we are lacking on the expansion and adoption side. There are too many cyptos, too many similar projects, too many main-nets and basically too many of everything. I think the that the current state of crypto wouldn't be here if we had only Bitcoin to rule them all, everyone working on it's network to improve it and create platforms from there (idk if that is theoretically possible).