Remind me which entities (govt or corporate) are going to subsidize that forever. Remind me which entities are going to front the cost just to scale up.
By that premise - wherein you forget everything other than the first ingredient (the model) - Google has no moat either (got $100 billion dollars lying around?). Nor does Uber (have tens of billions in your bank account to clone their business?).
I'm certain building an app (Uber), or building a search engine (Google), is the super duper hard part.
Slapping a GUI on Linux will kill Windows, any day now.
As long open weight models get released; no moats are going to exist. Both windows and Linux are weak comparisons.