It's funny to think of developers and users as two distinct constituencies with distinct interests. I had thought any good developer, by definition, would do what's best for the user. Therefore the interests of both groups are the same.

But I suppose you're right that the average developer is their own damn person with their own interests which can only ever partly align with their customer's.

I suppose there are actually three parties, all distinctly interested: the programmer, the employer, and the end user. The programmer wants to get paid and do "good work". The employer is actually a multipart entity: management and investors, each of which have distinct interests. The end user is not a single such person but a mass of individuals, each with a different set of interests.

This is getting messy!