> It is the government's place to regulate how prices get advertised.

Indeed, the government has already done this, to mandate that advertised prices are all-inclusive, with all the taxes, fees, charges and so on included in the advertised price you see when you're searching for tickets. Before that regulation, airline tickets were more like phone bills where the taxes, fees, charges, tolls, surtaxes, surcharges, sur-fees, and so on mean you pay $65/month for a "$40/month" plan.