It's entirely possible at FB/Google/Apple/etc. They definitely have H1B employees earning that much and I'm sure they are not looking to outsource those jobs. They are looking for quality not the cheapest possible price.
Anyone can give out $300K per year jobs when they are global monopolies that pay no income taxes in any jurisdiction.
These are short term anomalies not structural jobs indicate any kind of long term trend.
Clearly you never owned a company before and had to do taxes and accounting.
You better vote for minimum wage increases too!