That doesn't necessarily mean they're not co-opted.
https://www.eff.org/deeplinks/2017/07/amid-unprecedented-con...
https://www.defectivebydesign.org/blog/w3c_sells_out_web_eme...
The burden of proof for not being corrupted lies with the people and organizations that wield tremendous power.
We can't just have blind faith and wait for proof of corruption first. Instead we should assume it, and look for proof that there isn't any and be thankful when that's the case.