Disney (the company) has 20x the number of employees as Netflix, and just 2x the market cap (in fact they were briefly worth the same last year), ~2x the revenue and 2/5 the net income. So Netflix is clearly doing something right.
Is that all of Disney or just Disney+?
It doesn't seem like that would be a useful statistic if that includes completely unrelated positions (e.g. does that 20x statistic include Disney employees working at Disney Land/World serving up hotdogs? Because they probably don't contribute much to the streaming service)
Walmart's market cap per employee is probably much, much lower than Disney or Netflix, too. That doesn't mean Walmart is doing anything wrong.