You're right that reforms to the system have to take into account the fact that employers put a lot of money into attracting workers to Canada for a few months. They're hoping their investment will pay off for the duration of their season or crop year.
I'm really concerned about this. It's actually the reason why I didn't commit to making all closed permits open permits. Instead, we are going to take a close look at the working conditions and provide open permits only when abuse is happening or the facts warrant it, for instance, in a specific region or sector.