There are a few -- Glassdoor, and Google reviews let you post bad reviews of businesses even if they have tons of money. That's not to say I disagree that big money runs things, just that it's not 100%.
They would even request it during all-staff meetings.
I wouldn't trust anything on that site. The positive reviews are written under duress and the negative reviews have an axe to grind.
> ... It's also free to claim your employer account. After that, Glassdoor costs $249 to $600 per month depending on how many jobs you want to post and what specific features you want to add (again, the premium service costs more). -- (probably better sources this is just the top google result) https://fitsmallbusiness.com/glassdoor-vs-indeed/