Comment by hobofan

There are plenty industry-specific niche IDEs that you probably never heard of that make up a significant part of many companies product offering.

Jetbrains is valued around $7bil and their business is almost exclusively in IDEs.

Wolfram Research is valued probably around $100mil and their business also mostly consists of an IDE product.

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With AI, I think the future of IDEs will be very split. A lot less work will happen in IDEs (in terms of LOC), but at the same time, I think AI will allow for a more sophisticated build-out of IDEs, so e.g. debug experiences will become a lot richer.