I agree, except that engineering is"fit for purpose at the smallest cost." For me personally, I am banking on having multiple business customers for my softwar

I agree, except that engineering is"fit for purpose at the smallest cost." For me personally, I am banking on having multiple business customers for my software. If I consider the cost amortized, I can spend a little more to engineer something better. But yes, it still has to be fit for purpose. My customers will provide a document that explains what they want to do with my software and on what platforms. If I sign a contract, that means I am committing to supporting their purposes on those platforms.