I wouldn't say "slower," but the fact remains that the perception indeed has not improved much, and the reason for this is in fact surprisingly simple: the way

I wouldn't say "slower," but the fact remains that the perception indeed has not improved much, and the reason for this is in fact surprisingly simple: the way it's developed, software is like a gaseous substance - it occupies whatever space it is given. If some action or a response cannot take more than, say, 10 seconds, it will tend to take at least 10 seconds; if a program "expects" to be given a machine with 16 GB of RAM, it will take this much space just to run acceptably fast, etc.