> In what ways has mozilla meaningfully dared to try and expand their revenue streams?
I think that Mozilla VPN is pretty nice. It's based on Mullvad VPN, so they seem to know their audience (given that Mullvad has a pretty okay reputation among many tech savvy or privacy conscious folks, a lot of which probably use something like Firefox as well): https://www.mozilla.org/en-US/products/vpn/
I guess there's also Firefox Relay, for those who might benefit from something like that: https://relay.firefox.com/
Not many other products to give them money for come to mind, though.