A meal is a pretty simple fixed-cost item from a retail outlet, not a service with a complex set of dependencies and shifting requirements. The cost of the meal is predictable to the seller - dynamic pricing has only one purpose - gouging customers.
If SaaS/consulting/architectural firms are engaging in price gouging of their customers, that is not an argument to bring the same to the fast food market.
If SaaS/consulting/architectural firms are engaging in price gouging of their customers, that is not an argument to bring the same to the fast food market.