I think there is plenty of reason to be concerned about tech giants and startup darlings being run without a moral compass by sociopathic leadership. But it seems myopic to focus your concern on their employees, who'll endure a tough couple of years and then wash out into $100k+ jobs elsewhere.
What about the consequences on society at large of (a) letting these companies accumulate power and influence and (b) lionizing their leaders' pursuit of results at all cost?