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I've been using ESP for a while and they are trying things with RISC, and might eventually be lower cost.

Does the rp2040 have wifi and bt?

Espressif problem is that their various mcus are very similar in features and for a long time lacked USB which, for example made a RP2040 great for micropython where as circuitpython (adafruits version of micropython) dropped support for ESP32.

Realtek, NordicSemi and rpi seem to be catching up to them in the hobby-space area.

At one time Espressif chips were said to have real problems operating at, and reliably coming out of, extra-low power states. Is that still true?

Coming out of low power state (via pin or timer) has never been a problem. Until recently (March 2021) there was a problem turning off the 2.4GHz radio so it actually stopped using power.

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