What about buying rare earth metals or containers of electronics or purses? It's a bit more work, but it's not impossible to solve the problem.
Also, it's not like a 99-year lease has no value. That's your entire lifetime+.
I think OP's point is that a "99 year lease" isn't worth very much without a firm guarantee that the least in fact lasts that long. I don't really have an opinion on land leases in the PRC, but it doesn't seem facially unreasonable to suspect that a foreign lease holder's land value wouldn't be a priority for China's leadership during an economic crisis.
Because if I am running a business I just want to be paid in money that I can pay my bills in. I don't want to have the additional task of managing rare earths and electronics inventory. That's not "a bit more work." It's running an entirely different business that I don't know how to run.