The problem with developer tools is not technical, it's all about the selling part. If you make a new superior developer experience, you think developers will instantly see the benefits? haha! You first have to teach them, then after a few month if you are lucky you will get a "aha, now I understand". So first you need to manually educate each user until you have a critical mass. Then you need to market and hype your product. So that developers will tell each other how cool your new technology is. Continue with that a few years until there are code in production that use your product, before even thinking about a business plan. So there are few options, either you have enough money so that you do not have to "work" again, and can spend your time making new tools. Or your current employer lets you work on the tools. For a startup working on developer experience (language and tools) I would suggest a 10 year runway (funding) and that 1/3 of the budget goes into educating users and 1/3 goes to marketing.
Any software business that is profitable, already have code in production, and that code need to be maintained. So instead of creating a new better experience, you can make the current experience better. eg. putting rockets on a horse, rather then creating an automobile.
Any software business that is profitable, already have code in production, and that code need to be maintained. So instead of creating a new better experience, you can make the current experience better. eg. putting rockets on a horse, rather then creating an automobile.