calling it a free market is laughable naive. the market is lopsided in favor of businesses because many laws at the state and federal are explicitly pro-business and anti-union; see "right to work laws", the 1947 Taft-Harley act, etc. - especially over the past 20 years
and saying workers should just go and join a union backed job is even sillier when <15% of all full time workers are apart of a union [1]