I've been saying 'Wipe' for a while now. They did a wipe in Elite Dangerous and the game just got stronger, we had all sorts of updates in SE where you lost stuff we had built, but when a game is pre 'full' release in any stage, wipes can happen, don't play if you can't cope with a wipe..
I had millions in ED, plus the best ship in beta, but when they wiped, it all went. But for the good of the game, starting with a level playing field for 'all' at release, it was very important the wipe happened, it brought lots of new players in.