I'm building a business facing SaaS for a market with about 10 current incumbents of varying scale (millions to billions of revenue). The technology is about 40

I'm building a business facing SaaS for a market with about 10 current incumbents of varying scale (millions to billions of revenue). The technology is about 40, maybe 50 years old, my stack will be a bit more modern but still based on ancient specifications. Once my product is close to parity with the basic competitor offerings (i.e. copying 1-2 features and ignoring the rest), I'll market it and I'm hoping that my automation level will give me a massive margin that allows me to operate at a lower scale and still churn out a decent amount of net profit each month.