> Why is web software so easy to make money in? Why do we value hard engineering so little?

low barrier to entry, high potential impact.

also web development is trendy and developers in general will make a lot of fuss about pretty much anything (tabs vs spaces? emacs vs vi? xorg vs wayland, "btw i use arch" is literally a meme) and about money in particular... a lot of company finally give up and accept paying more and then a lot more companies have to follow the trends and pay more.