City streets and computer hardware and blockchain throughput. We dream that 'make bigger, make faster' will alleviate congestion in all of these places, and make our commute and compute as fast and cheap as we want it to be.
But in practice, commuters are programmers are blockchain users.
For commuters, if more lanes get added to a local highway, driving to work becomes traffic free - so why not drive when you used to take the train? With all this extra capacity, there's traffic again.
For programmers, faster computers mean less need to be efficient. Less worry about writing efficient code, seemingly as much JSON parsing as one can tolerate, more dependencies, and higher level languages that make programming more pleasant but less efficient. And so computers are 100000X faster than they used to be, but opening a text editor is about as slow as it was 10 years ago.
For blockchain users, it will be the same. As block space increases, the applications users dream up to run on the blockchain will as well. And so transactions will end up costing the same.
That being said, the total capacity will be higher! So we are scaling - I just don't think it's gonna be the utopia it might appear at first glance.