Right, but imagine the product would work on any website and you got a bunch of users (by bootstrapping with those website owners). Now those users can visit am

Right, but imagine the product would work on any website and you got a bunch of users (by bootstrapping with those website owners). Now those users can visit amazon and chat with each other because they have the extension installed. Basically, imagine if Honey added realtime chat between users who were on the same website. That would solve OP's need. Question becomes how do you get the install base of Honey? If I had to do it, I'd try to get website owners to embed my chat and have the embed promo users to download the extension.