Disclaimer: The below rant does not include things like healthcare where choice in the market is either not a thing or not possible. Lest someone think I am being absolutist. It is purely railing against the average consumer widget, not grandmas oxygen tank refills.

That depends on how many people want them.

Companies will make, or stop making/doing, nearly anything if the money for doing it goes away. But not enough people want "dumbphones" bad enough to stop buying "smartphones".

Just like not enough people want small phones to stop buying the big ones. Or not enough people want the price of Netflix to go down to stop paying for Netflix, etc. Consumers in general need to learn the power of and build up the mental discipline to do without when the available options aren't what they want. Apple, Google, etc can't force you to buy it from them after all.

Companies prey on the inability of the consumer to go without when they find the terms of the deal distasteful to great success. Large chunks of every companies marketing department think about nothing else.

The real "sin" in all of this is there not being enough smaller players around to fill those smaller segments, because we kept buying from the company that bought up all of the competition years ago despite finding those practices distasteful.

Companies, and politicians, have figured out that the average majority is all bark and no bite. And the average majority would be wise to start to figure that out.