EMI for the subscription-based content project

Hi guys,

I'm opening a new project with a business model like OnlyFans / Patreon does - Pay-Per-View subscriptions (to let people monetize their content via subscriptions).
It's not necessarily adult (P**N-like), as OnlyFans does. But a significant part of it can be erotic (not P**N, but braver than what you can see on Instagram).
I need a merchant account for this activity.

The question:
What is the normal % of commission can be for this activity?
For example, for dating it can be around 5-6% and for adult is around 15%. But it's not really and not always "adult"

Also, my current company is Hong Kong-based, so most adult processing solutions don't work with this jurisdiction.
Will the % of the commission be lower if I register EU based or UK company? Is it worth establishing a new company? For example UK LLP with one of the partners as a HK company to lower taxation? What other advantages of having EU/UK company instead of HK?

I would be so thankful for sharing your thoughts and experience in this field.