When you get to the top of the range your salary will only increase in line with inflation/market forces whatever you do. It's not possible to get 20-30% more every time you change job unless you've stayed a long time in your current job and they were taking advantage of you (in which case those 20-30% represent what you were actually losing).
As for titles, obviously what I meant relates to what the actual role entails. 'Senior software engineer' is usually not very senior, in my experience this often means a dev who can be left alone to deliver the specific feature they were tasked to code. As for "highest IC role there is" again, if the job description is very senior you can also negotiate commensurate title and pay.