As a preface, I am long-term bearish on Bitcoin, and have been since it became apparent to me that the community and development process had basically been terminally broken in 2016 - everything that's happened since then has been utterly predictable, and I'm pretty sure that while it might not go away, it's basically a legacy product.
That being said, Bitcoin currently has the highest market liquidity (trading volume, markets, stability, convertability) and has the most mature investment infrastructure. It has the most fiat rails and trading pairs (almost all alt markets are pegged to BTC) and for moving sufficiently large sums around internationally it can still be considered relatively fast and cheap.
There's a large SoV use case for a cryptoasset that is censorship and seizure resistant, although personally, I have questions on whether something can be a long term SoV if it doesn't functional well as a MoE (maybe Gold proves the case).
Also, I feel like the financial side is currently not very savvy on the actual blockchain mechanics side of things and agree that it seems like you would absolutely want to use the most private blockchain you could find for SoV, but I don't have much expertise in that part of the world (offshore assets, wealth management, etc).
While it feels like we're a bit in '98 for the speculative bubble after last year, for blockchains/DLT, I think we're maybe '94 on the tech. Still, cryptoassets have seemed to make a jump to a legitimate asset class last year, one that's big enough for the financial world to pay attention to, and that has some very interesting investment properties and a lot of potential (when I sat down to total up the amount of long term economic impact, I came to the conclusion that it may be a bigger deal than the Internet.)