Id say its incredibly noticable in Web design, development and Marketing. More so in the bottom end of the lines.
For example I used to spend around £1000+ a month on small tweaks, code snippets and functions with some developers, now that is zero as quick code snippets, functionality and basic custom plugins can all be done ( if you are knowledgeable enough ) with AI without the need of a developer.
Don't get me wrong, developers are still needed as AI isnt perfect and doesnt always produce good code, but for bug fixing its exceptional, quick and hugely cost saving.
The down side to that as a service provider is more and more businesses on a budget are doing alot of things themselves, and although that doesnt bring the experience of a consultant, the smaller projects we used to take on for alot of lower budget clients, often turned into bigger clients with retainers.........so there is loss in some direction and gain in others.
I personally see the entire Marketing, design, development space being flipped on its head with only consultants and highend service providers able to provide value over the coming years without a signficant pivot in service offerings.