There are a ton of Facebook groups too for finding online games. Although most use discord rather than zoom/Google meet. I run games on Discord using various vtts such as foundry and tabletop simulator. There’s a lot to pick from.

This will be adventure modules and other official content to be purchased. Hopefully with all the bells and whistles you can have in Foundry.

Not sure if there is a big market, as most foundry users are comfortable putting the scenes together already.