>>> I'm not sure what you think the business model is that would go against code reuse across sites. If you can afford to negotiate for ownership of what you build at a client site, why wouldn't you reuse things that are common?

Because there isn't much that is common. You're called to craft customised software, with special customization for the client needs and tight integration with the client systems.

Anyway, none of this matters. At the end of the day. A consulting shop doesn't bill software, it bills the hours*men.

Whatever spectrum you think you can achieve, your actual business model always push back to its extreme side.

I've worked at consulting shops trying to bill software as software. I've never seen it goes very well.