Alby has had low limits all along so that they can avoid having to force their users to KYC
Does this mean Alby will have to start KYC soon?
Just received this email: 
nostr:npub1qny3tkh0acurzla8x3zy4nhrjz5zd8l9sy9jys09umwng00manysew95gx
Discussion
Looks like they're going to have to anyways. They're either a money transmitter or not. Wouldn't really make sense that you could use without KYC below a threshold.
A lot of custodial exchanges used to let you send/withdraw below a certain threshold without doing KYC. I don't know if they still do because I haven't used any custodial exchanges in a while. I was never forced to KYC on Bittrex but I never moved volume through there. I think Alby at least for now won't have to force anyone to KYC if the user's transaction volume value stays below $1000/month and $600 for any single transaction.
*used to
You answered your own question. Regardless if they move enough volume, they will be forced into it by regulators.