AFAICT, the fee applies if you're using binary releases, or if you open issues, and are
also generating revenue from the project. Apparently you can grab the sources and build the binaries yourself (as per the OSS license), never ask for support (by reporting issues), and still have to pay nothing, even in a commercial setting.
It looks a bit similar to the RedHat model: they release open-source software (Linux kernel is GPL2), but you may want to buy their binary releases and support.
Not so rarely companies would not mind paying a small amount to help support the OSS projects they depend on. This may give CTOs an easy way to expense such support, even though becoming a GitHub sponsor is more involved than many would like; I hope Wix will introduce even easier options (Open Collective, its own non-profit, etc).
It looks a bit similar to the RedHat model: they release open-source software (Linux kernel is GPL2), but you may want to buy their binary releases and support.
Not so rarely companies would not mind paying a small amount to help support the OSS projects they depend on. This may give CTOs an easy way to expense such support, even though becoming a GitHub sponsor is more involved than many would like; I hope Wix will introduce even easier options (Open Collective, its own non-profit, etc).