Amazon will be removing all of my listings in a month so they can sell it themselves

As the title says…

I have been selling many varieties of one product (but not my own brand) for 2.5 years now, and 1 year through FBA. I got an email a few days ago that starting in mid-May, they will be removing all of my listings as they have decided to “source directly from the brand owner”. Is there anything I can do about this or am I SOL?

Of course I had just started scaling up my business and now I have to liquidate everything. I’m so annoyed.