If the divide is not great, there's no reason why collective representation of employees would "distort market forces." If c-suite can represent themselves, no reason why engineering guilds shouldn't have the power to determine the outcome of their companies. Especially if the class divide is not as great, as you say, then the employees would have similar incentives to that of management.

But as there are not many tech companies with unions, co-ops, or other structures with more employee power, that test does not exist and the current success and failure of companies is immaterial to this debate. The experiment has not been started in full, other than a few isolated causes such as Kickstarter (which was only inaugurated recently).