Been there. The frustrating part isn't even the suspension, it's the zero information — you don't know what triggered it, so you can't fix it.
Couple of questions that change the answer a lot:
What's the suspension reason? Circumventing systems / Suspicious payments / Unacceptable business practices — these are completely different problems. Circumventing usually means something in the account fingerprint or history, suspicious payments is almost always the payment method.
Did they all go at once, or one by one? All at once = they're linked and one bad account took the rest down. That's the most common scenario people miss — the accounts weren't independent to begin with.
Have you appealed? Not the "I disagree" template — a written appeal with an actual explanation of your business. Low odds, but not zero, and it costs you nothing.
On the clients side: if your business relies on your ability to keep accounts alive, that's a single point of failure. Worth diversifying the traffic source before rebuilding, otherwise you're back here in three months.
What vertical are you in?