[manquer]

I wouldn't say 'unnecessary' as such, adding people is one way to solve problems just not the only way

It is easier to solve problems by adding more people, especially when financial resources is not a constraint. However like technical debt, process and people debt will keep growing. There are some methods to have handle on it like the Spotify pod model, but no method is the magic bullet.

Every resource you add is additional cost not just on the payroll but also on the work overhead. 2x sized company will not do 2x work after all. At some point the incremental value of new resource is not worth the incremental cost.

I am not sure many startups consciously think this through while scaling up.