To be fair lawyers are worth more than senior software developers, but not too much more. That $250-$750 per hour is the business rate not the profit that goes to the attorney. If an attorney works at a large firm most of that goes back to the firm. If the attorney goes out of their own they have personal business expenses to account for.

As a software developer I bring home more than some attorneys I have met. I am not working a FAANG making buckets of cash either.