Easily move between jobs:
Only true currently, and only if you're in certain metro areas. Are we forgetting 2007-2010? or 2001-2004? There are likely more down years than up, but I've only been in the workplace since the mid nineties.
Command decent salaries and benefits:
Decent compared to the median nationwide salary, sure, but decent compared the value brought to the companies? Hypothetical example: Who's more "decently" paid? The $15/hr fast food employee who delivers $30/hr in value to their company, or the $150K software engineer who delivers $2MM in value to their company?
More able to negotiate better conditions individually with their employers:
On what planet? Go ask your employer for time-and-a-half overtime pay and let me know if they only laugh for a few seconds or a whole minute. See if Legal is willing to make an exception to their mandatory IP assignment or binding arbitration clauses just for you.