Typical Web Development
Big change! Rewrite everything! In other words, the usual state of affair in that domain. I believe that web development is a leading bullshit job generator in the IT world (bullshit jobs: read this for a starter).
20 years ago, in web development, perl was a big thing. 10 years later perl was quite gone from web development. Now ruby is not looking so bright and it gets (along with python) tough competition from weirdos who believe in JavaScript as a server-side language. And that's just languages, don't get me started on frameworks, with a new one every five minutes. You start to learn a brand new one that seems to have a promising future? By the time you are becoming proficient, it's already deemed "old school, nobody should use that anymore" or got so many changes all of a sudden you need to relearn from scratch. Add to this so many organizations that reinvent their website for no reason, and is often a clear regression from before (harder to access information, though perhaps intentionally). Dilbert on this. It seems nobody is learning from amazon: A rare case of a website that certainly changed, but very slowly, incrementally, and usually with actual feature improvements that I agree with as a user. Pointless design changes? Can't recall any.
20 years ago, the top free GUI development frameworks were GTK and Qt. Today? GTK and Qt. How boring for PHBs! Of course those frameworks evolved, but much of the skillset remains valid.