I think we'll see in the coming years that BSV simply isn't sustainable.
It's funny that you mention "economic incentives." A deflationary supply with no fee pressure? 1 TB block sizes in the next 2 years? How is that supposed to incentivize miners to secure the chain? It sounds ludicrous.
Compared to LN - easy to sustain.
Compared to 1megSegshit coin - easy after as well cause lot of business will use BSV also as audit / time stamping layer, the only open scalable blockchain the industries are looking for, and can adopt cause the impl is close to spec - legit as such - and does not (need to) change. LN and other 2nd layer stuff are not 10y old and tested Bitcoin and are at experimental stage at best with poor level of safety for any industrial use and legal implications that make any adoption challenging.
You're just dodging the issue, though. It doesn't even matter if everyone in the world wants to use BSV. The entire design is based on the idea of not allowing scarcity of block space. There is no way to pressure fees above zero. How the hell are miners going to be paid? Or do BSV miners just secure the chain out of the goodness of their hearts?
BSV is setting itself up to implode when the mining subsidy starts winding down. Not that it matters to Craig Wright and Calvin Ayre. They're just here for the cash grab.