You should copy Magma's model but be open source and use support or web hosting (like cocalc does) to justify the price tag. Then you get users to give you the

You should copy Magma's model but be open source and use support or web hosting (like cocalc does) to justify the price tag. Then you get users to give you their grant money. Or convert to closed source main branch and release 1 yes old versions or at $ bounty milestones as open source, to motivate users to buy a license.