Why do broadband providers sell “internet speed” while mobile data providers sell “internet amount”?

Question

I noticed all broadband deals come with how fast the internet is and all mobile data deals come with how much internet can be used up. I am aware that the amount of broadband data for a household can be huge and 3G/4G speed can be less than perfect, but that does not mean those cannot be modified to specific consumers by the providers to my understanding.

So, what is the catch?

In: Other

Answer 1

The airwaves are a finite resource. There is only so much bandwidth you can put over a radio channel. Wired on the other hand is more plentiful. If you need more bandwidth you add another wire/fiber.