If you need something else, you pay for it. Open source does not necessarily mean open contribution. It may turn you off, but the tradeoff is that you can make

If you need something else, you pay for it. Open source does not necessarily mean open contribution. It may turn you off, but the tradeoff is that you can make the changes you need and run for your purposes. If your purposes is to make closed source software with it, you will need to pay for that privilege. win-win!