One aspect you may want to consider with PAMM accounts is the legal requirements which are attached to this account type. By opening a PAMM account you become a Money Manager, and thus you are controlling clients money. This is very different to the likes of Zulutrade or providing trade copy EA’s.
When you become a Money Manager you can not just simply open a PAMM account and expect to get away with it in the long term. Depending on your country or residence you will require certain qualifications, memberships to financial regulators (such as FSA in the UK). Be careful though, the fines are heavy if caught without the required paperwork - even though foreign PAMM providers will open an account for you without even asking for this paperwork. When your clients sue you for losing their funds, it’s not the brokers fault, it’s yours - the Money Manager of the account in question.
Essentially, a PAMM account is what the big traders use in the city so that their clients can invest in the funds. Do you really think they have no industry recognized qualifications and are not on the register of a financial regulator. You bet they are!!