Well yes, in reality you want a system where you don’t wait until the lease expires because that would leave many short lease properties without investment. It is trivial to value (competitive real estate market, rational negotiation, market interest rates) a lease extension from 30 to 99 years (enabling development) and the state shouldn’t really care about it unless it wanted to take ownership early as part of a wider land development plan.

The state is technically repossessing it when you own a lease, but it’s not something you had rights to anyway, or had paid for. The terms of what you own are up to the lease end date, under the terms of the lease.