That's certainly not why the programmers involved do it, they do it to improve things, but the effect is platform lockin, which is not at all unwelcome for plat

That's certainly not why the programmers involved do it, they do it to improve things, but the effect is platform lockin, which is not at all unwelcome for platform vendors and I suspect is why the companies are quite happy with constant churn in languages and tools. I'm not suggesting that is 'why they do it' just that it is a strong incentive to keep doing it. If they don't control the language and tools for the platform, they don't control the platform.