Think of it like a save file in a game.
You play for 10 hours, all is grand and you save the game.
You play for 30 hours, the files are slightly odd.
You play for 50 hours, it is corrupted/too silly.
Consider that the cause of the corruption was most likely the stuff at 30 hours, you'll have to revert to the 10 hour save file. That's a lot of stuff down the drain.
So while you may lose stuff in the short term, it's to stop you losing everything in the long term.
A friend of mine started playing again short before the rollback and neither he, nor me noticed, that there would be a rollback. I lost loads of money, he almost all his ships. Since my motivation is gone, I'm just gonna sit here and wait, till it happens. It sure would be nice to have the ammount of time until the rollback though, even if its only a rough estimation. Well I guess, we'll just keep planing until it happens. I hope, its not more that 3 weeks or so...