The risk point is a good one. Free but closed-source software seems like the worst of two worlds, noone has any obligation to make it work and unlike if it was

The risk point is a good one. Free but closed-source software seems like the worst of two worlds, noone has any obligation to make it work and unlike if it was open-source, I can't do it myself either. But does anyone really use free, closed-source software for core business functions?