Ask HN: Browser based screen sharing/cobrowsing?

I am looking for a way for User 1 to share their browser (our app) view with User 2.

There are a handful of solutions out there like cobrowse.io, samesurf.com, etc but they are all marketed as CX tools and priced per seat.

We're interested in using this for CX but our use case extends past that where we actually want users to be able to share with other users. This makes the per-seat pricing untenable for us.

We're open to paying for a SaaS, self-hosting something, or even doing some custom development. All we need is a Read Only live view of one browser to another.

Anybody have any ideas?