The ADA, and other laws such as the ones you mention, require that one party benefit the other party under threat of force [fines, imprisonment, etc] and not because it is done voluntarily as an exchange of adequate values. That`s forced charity - also known as theft. The "well everybody else does it" defense doesn`t change anything.
"it`s ok for them to steal from you cause, heck, you stole from them." that may be true and it almost certainly is - but it does not make anything legitimate.