I really wish I could give up Adobe, especially since they're actively hostile towards Linux (excluding Android).
Unfortunately there still aren't any good substitutes for Photoshop. We're getting closer all the time but we aren't there quite yet. No Affinity, GIMP, and Corel aren't enough (but I hope they get there someday).
Illustrator is still hands down the best vector editor.
As far as I can tell nobody is anywhere near replicating the functionality of InDesign.
Most web developers stopped using Dreamweaver around the time CSS was invented and people stopped using tables for layout.
Flash is dead thankfully.
I don't do much with video and didn't really like Premiere or After Effects so I'm not familiar with that side of things.
On the bright side of things there are several fantastic alternatives to Lightroom.