This seems to be to basically be the logical conclusion of profitable FLOSS software, no? The entire software stack is free and open-source; what the end-user i

This seems to be to basically be the logical conclusion of profitable FLOSS software, no? The entire software stack is free and open-source; what the end-user is paying for is an attached service, like the infrastructure hosting/bandwidth, cloud storage, software support, updates, etc. It seems preferable to the donation model.