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Yep, you can see this if you go poke into LoRa and associated protocols. 915MHz does have some restrictions on either using spread spectrum, frequency hopping or much lower power limits so it's still quite different than say the ham bands.

Yes the Europeans give away some of their knowledge when looking at radio spectrums, the recent 5G bands causing problems with aircraft at airports in the US is one such example of forward planning or lack of.

There’s also listen-before-talk rules for devices in certain ISM bands in the EU. Affects at least LTE, Wifi and a few other users in 5.8ghz

Our band around 400Mhz has a similar limitation.