Victor from Germany here!
Switched from an entry-level DSLR to a A7IV just a couple of days ago (still reading tons of manuals).
I am a hobbyist who went from a 600$ to a 2800$ camera for several reasons. One was that I missed certain key features, but more important was that I wanted to switch to a camera which I was hoping to be happy with over the next 5+ years (or even more). I know that my A7IV won't make me a better photographer, but maybe I kept telling myself that I needed to go mirrorless as a justification to invest a fortune ... 😉
And after having read thousands of reviews and having watched billions of youtube videos I decided to go all in.
Btw there was another reason: I do videos from time to time and I think there is no other camera out there offering the best of both worlds.
So far my impression is "Wow" .... the A7IV is a great camera.