[okl]

I think a first question could be if it is in Glassdoor's interest to be fair/objective for both parties. I would assume that users are more likely to visit and engage when drama, conflict and emotions are to be found in the reviews. It also gives companies an incentive to respond on the platform because of the reputational damage.

[hyperdimension]

To your first question: not unless employees (as a group) are willing to pay Glassdoor more than the employers. The economics are biased toward the employers unfortunately. See Yelp as another example.