It's (likely) much less expensive (in many ways, not just financially) to employ a larger number of python programmers than a smaller number of them skilled in

It's (likely) much less expensive (in many ways, not just financially) to employ a larger number of python programmers than a smaller number of them skilled in a language more appropriate for the use case. Engineer flexibility, salary costs, maintenance/correctness concerns with implications for development time, etc., are all factors here. The technical choice of "python or not python" is rarely the only--or even most important--choice to make.