Exit scamming strategy is exist in every field, so when a company earned lot of reputation and made enough money for their future then they can scam people by closing their business but in real world its not possible since we know the company owners so the laws of our country will punish them.
Anyway a company with good reputation may not do this since they already on the top of the list so they can keep making money ebery year and also their company will grow bigger.
I think it's hard for them when they just close everything they built years ago since the competition in the market is already tough. However, if they planned this kind of thing from the start, then they will close their business like what we have seen on the cloud mining scam in the past years. they often do this even though their business was already successful and you will not imagine that they will gonna do that. But it is already planted by those scammers there's nothing you can do about it.