Comment by samatman
The Linux kernel's license is copyleft, which has done all of zip, zilch, nada, zero, to prevent large corporations from benefitting from the enormous amount of free labor put into open source.
Git is GPL, this didn't prevent GitHub from becoming a multibillion dollar behemoth of a Microsoft subsidiary.
The value which companies capture is in using software, not modifying it and selling a proprietary version of the modified code. The only way to sustain this misapprehension is to notice every time permissively licensed software makes a company some money, and studiously ignore it every time copylefted software does the same thing.
> The Linux kernel's license is copyleft, which has done all of zip, zilch, nada, zero, to prevent large corporations from benefitting
You have it backwards. The goal of copyleft is not to "prevent others from benefiting". The goal is to potentially benefit from the adoption. If someone uses your copyleft library and fixes bugs in it, you can see their fixes and bring them back upstream. So you benefit from their work.