Maybe you should talk to https://goodsnooze.gumroad.com/l/macwhisper to get some inspiration?
People are paying for convenience.
as for the technology itself: the B2B market is super-super early and i understand everybody is in goldrush mode, however 98% of all startups will not survive the next 3-5 years.
From the demand site: Companies are still sleeping, you can see very very very few proof of concept implementation, but basically nothing goes to production.
The rate of innovation is extremely high with LLM, making it a bad investment for a company.
My idea: OSS everything, become an expert in the field, learn how to sell, survive from consulting services. Don´t build products, do paid projects instead.
Focus all your energy to understand customer needs and building your target audience.
Be ready when the time is right to build a startup around LLM.
Don´t waste time building technology, develop your business instead.