It’s also unknown if anyone will be willing to fly on a Boeing 737 MAX:
Regarding the additional 385 MAXs that were delivered to customers but have been grounded for almost a year and are parked at airfields around the world, company spokesman Bernard Choi said Boeing is recommending inspections for those airplanes that have been in storage for more than a year. “It’s still undecided if we will inspect the rest” of the delivered MAX fleet, he added. “Obviously, we’ll do what’s right for safety.”
Source: Boeing finds debris in wing fuel tanks of undelivered 737 MAXs, orders inspections | The Seattle Times
No idea what someone was thinking with that last quote – “it’s still undecided if we will inspect the rest“. When you are in a hole, stop digging. That decision ought to be obvious.