Open source is only part of the equation. The other part is having maintainers and community. Being able to fork it is great, but if there's no community fixing

Open source is only part of the equation. The other part is having maintainers and community. Being able to fork it is great, but if there's no community fixing bugs, if there's no security fixes, if there are no improvements, if the main product changes drastically from the open source version and the files are not compatible in between, there are serious problems. Many open source products stagnate and die, whether or not they were popular, when the company is no longer involved. Community is not automatic or instant.