Bad, short-sighted engineers will do that. An engineer who is not acting solely in the best interests of the wider organisation is a bad one. I would not want to work with a colleague who was so detached from reality that they wouldn't consider all GP's suggested facets. Engineering includes soft/business constraints as well as technical ones.

I find it is the opposite way around. I come up with <simple solution> based on open source tooling and I am forced instead to use <expensive enterprise shite> which is 100% lock in proprietary BS because <large corporate tech company> is partnered and is subsidising development. This has been a near constant throughout my career.