I'm co-founder of Iterative.ai /DVC.org (open source tools for ML) and doing conferences/meetups is an essential part of the business for us (kinda marketing for dev tools). I would definitely recommend you to connect and talk to amazing folks from the https://tulu.la/ team. They are building (still in stealth) a product to run online events with experience as engaging as possible. I'm biased, since I know founders personally (and happy to be their friend!), but they started their company with this vision even before all this coronavirus stuff, they definitely have a big vision in mind for a long term and have been passionate about this space for years. An example would be this online conference they organized a while ago - https://divops.org/. I would happy to connect you (and I'll send a link to this conversation to them).