Because web "standards" are shaped by Google and western companies for the things they want (ads and tracking). And being able to clone a repsoitory is not the same as having intimate knowledge of how it works, to maintain it or add on to it or the ability to contribute to it and shape its direction.

I think some part of the reason why open source software has been so accepted is that it is mostly under the control of the US. The US Congress wanted to restrict RISC-V because China is one of its main implementors.