genuine friendship
I don't think this means what you think it does. If you need to pay for it, it's not friendship. It's acting.
On the contrary, I think it is actually friendship but just being commercialised. One can decide to be your friend for a particular undisclosed gain, this case is different. You clearly understnad the terms and the motive. You save yourself the stress of being snitched, ripped off, trusting and being blackmailled.
I think its a wonderful service that can be and will be commercialised. I know loads of people will want this kind of service rendered to them even at a cost.