[dirkc]

Two things I'd add

1. software doesn't only have tech maintenance - there is also user support and it increases as software grows.

2. I'm not convinced maintenance costs scale linearly. And even if it scales linearly, you will eventually get to a point where maintenance takes up all your time.

[samrus]

You think it scales super linearly? Could make sense, with the mainta8nance of not just the parts but how they interact with each other