The government would then be the only thing preventing a race-to-the-bottom in your wife making any money.
I have seen deregulation of industries decimate trucking, giving rise to subhuman organizations like Prime Trucking.
I would strongly advise anyone seeking deregulation to really consider... does this mean - literally - the only thing that one can offer as a competitive edge is how little money you are willing to take for this service?
Additionally, given the wrecking ball currently applied to the us govt, I would strongly advise that "no tax on tips" and "default gone regulations" may help some minimum wage people, but they have super nefarious implications for other parts of the govt. "Tips" for example are now legal to politicians, per the US Supreme Court [Snyder v US, 2024] and "no tax on tips" implies that politicians do not have to record those tips as income on their taxes... which was possibly one of the last ways in which they could have been documented in any way.