See shopify took out a lot of custom ecom development, wix/squarespace/elementor are now default option to launch a simple webpage.
Similarly AI is going to knock off lot of other web based services. Sam Altman tweeted that dev salary market is going to correct itself drastically over next 5 years.
Why would businesses pay a agency 30k$ for an ios app when same can be attained through subscription to some giant AI service provide for couple of hundred dollars.
Currently Most people go for AWS or other cloud provider for backend infra - they don't hire engineers to set up their own distributed Data warehouses and servers. Similarly most likely in 3-5yrs all digital assets (video,image,code,music etc..) will be provided as some sort of subscription.