I think building the payment solution for the time spent on meetings via video calls is straightforward,
- Integrate Calendly's API for scheduling.
- Integrate Zoom API to get call duration.
- Integrate Stripe Connect to charge the participants of the meetings based on the price/minute set by our customer.
Judging from the insights, There seems to be enough interest on this need-gap. In fact the only reason I haven't built this myself is because I don't do real-time communication, I haven't even used Zoom yet and so I don't think I can give my 100% in building something I don't really use myself.
I might even have the right name and domains or the solution, I own http://iwillpayforthat.com , http://iwillpayforthis.com, http://iwpft.com & respective social handles which I bought for addressing the /problems/238 . If someone wishes to implement this idea and would like to buy these domains I would be willing to sell them.