Nothing is worse and more risky than OpenSource disattended. But also OpenSource can be paid soft, if the dev won't work for free, with more reason, when the OSS also implied an infrastructure, like servers. A good example is the Proton Mail and Proton VPN, both OSS but only freeware with premium account, if the user want the full features. But all of the OSS needs a regular maintance and security updates, because also bad people have easy access to the source to find backdoors and security holes, not so easy in closed source. OSS is very usefull and important for developing new soft or use it as base for other projects, but it's important also a good attention by the devs and better with a strong community behind, without this, it turned very fast in obsolete or direct in trash or worse. Bad experiences in the past.