There is a difference between 'charge-out hourly rate' and 'hourly rate of pay'. Even high end lawyers are unlikely to be paid more than one-third of their charge out rate, unless they're partners (ie, business 'owners').

You probably took that into consideration with your response - I'm not disagreeing with you, just making it clearer.

And yes, there are many jobs where the pay rate exceeds $300 / hour. In my field (business coaching - no formal qualifications necessary, though they may help) a Harvard Business Review study found the average charge-out rate is $500/hr, the top measure is $2400/hr, and most practitioners work solo so don't split that fee with anyone else.