I wouldn't hold my breath for a backlash.
Among the western nations, at least, passengers claim to ant all sorts of amenities -- checked bags, in-flight food and entertainment, etc. -- but all of those claims go out the window when presented with the price tag, which is ultimately the driving force.
The logical result of that is unbundling of all of those bits, such that you can get a bare-bones "just fly me from A to B" fare and then anything on top of it is charged as a separate fee. And that is overwhelmingly the fare people choose, because it's the cheapest one.
There are some airlines bucking that trend, many in Asia or the middle east, and one or two in the western world. But mostly the way they do that is by distinguishing themselves to international business travelers, who are far less price-sensitive than vacationing families.