Data is data in the same way water is water and electricity is electricity; nobody should have the power to dictate how you use it. I really wish we’d enshrine genuine net neutrality and shut this kind of nonsense down.
Except there is not a physical commodity or production at the other end of which they are supplying me a portion of a finite amount. If they "pipe" is big enough to supply what is promised to every end user it is supplied to, the water company or power company can still run out of water or power if one person uses a ridiculous amount. The ISP can't run out of "data", they aren't even supplying it - it comes from a host. The ISP is just responsible for running the cables, or "connecting the pipes".
The ISPs loves using the comparison to water or power, because you get charged more for using more of either and that is how they have convinced lawmakers (who are so old and out of touch they have no idea how the internet works) that using more data should cost more. They've convinced our lawmakers basically that they have a big "tank full of data" and if I use too much, there wont' be any for my neighbors.
The truth is they are selling me something they can't provide - a 250Gbps "pipe" that can't actually supply 250Gbps if everyone they sold it to wants to use it at the same time. They sell the same pipe to the whole neighborhood and blame the neighborhood when they try to use what they were told they bought.