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But consider that in perhaps 99% of current python code high performance (of the pure python code) is not the primary concern. And now for the times when performance does matter you can get a 20x (?) speedup without rewriting in another language.

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I'd expect in many those cases people care for performance, they already use multiprocess (so the impact from a 20% hit GIL-free CPython would actually be a slowdown).

And for those that do not use multiprocess, rewriting their currently single threaded Python code for no-gil shared-concurrency will indeed bring a speedup, but would still be a significant rewrite.

Also there are people using Python for things like web serving, where performance might have been secondary to convenience when they picked Python, but still a sudden 15-20% slowdown will seriously impact their server budgets (or ability to update versions)...

> But consider that in perhaps 99% of current python code high performance (of the pure python code) is not the primary concern.

Then why do we care about GIL removal at all?

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