DEFI on the RSK network is a great idea and SOVRYN is doing it. I believe Bitcoin lovers will invest in the project as well as join DEFI with SOVRYN. Recently Belba Fish based project announced fundraising on SOVRYN. I think DEFI on the RSK network can compete with DEFI ecosystems on ETH, BSC or Solana.
That still needs more and more advertisement and probably the cex listing on the major exchange site will be boosting the popularity of the RSK.
Not so many people know about this and CEX is a really important thing to be considered. it's slowly increasing again. Babel fish launch got delayed but there will be another feature will come soon like SOV margin and etc.
RSK needs to put more effort rather than always peg with the project that built on it and then it can compete with solana, BSC and etc