I agree with the thrust of what you're saying but... Monero can't sustain any circular economy of scale without a working L2. Blockspace is limited. Every transaction humanity makes shouldn't be stored on chain for perpetuity. That's silly, wasteful, and leads to centralization. An L2 solves that problem. Without an L2, as Monero's use increases, so will fees, variable block size will hold that off for a while but not forever and not without sacrificing decentralization.
Monero has no L2 and not enough dev talent or funding to make it happen in the next few years. Its protocol is different enough from Bitcoin that pre-existing solutions like lightning can't just be bolted onto it without significant development effort and privacy trade-offs. Meanwhile over on Bitcoin's side, they continue to add more functionality to their chain with a massive dev pool in terms of talent and funding. And privacy does continue to improve, lightning and ark are both pretty opaque depending on how you measure it. So if Monero wants to be a significant player on par with Bitcoin and have a circular economy, it will need to step up to the plate in a major way, and it needs to do that before Bitcoin implements privacy upgrades that place it at feature parity with Monero, which is imo only a matter of time since those folks tend to be pretty pro privacy. Yes, there's "ossification", but protocol improvements are still happening, especially outside the bounds of the main chain protocol itself (in L2, mining protocols, etc).