I'm sorry that I'm apparently not getting my point across to you
Proprietary software is often made by a corporation, who pays full-time developers. Those full-time developers are given a salary to work on that software. That salary is normally more than what open-source devs make off their software. The team who is paid to work full-time on the software will patch issues faster (theoretically)
I bet you'll find something wrong with this, but I don't care