ProRes RAW requires capture to an external device, such as an Atomos Ninja V. I am not sure any current or upcoming DSLR is capable of capturing ProRes RAW internally at this time.
Pragmatically yes, but technically it doesn't. If look at Apple's ProRes RAW Products list you'll find DJI's
- Zenmuse X7
It doesn't come standard. You have to buy an extra license. For the other camera markers ( except for RED ) the more pressing issue is costs. Both the license cost , materials ( processing power and/or fixed function logic ) , and lost opportunity cost ( to stuff the data into their own RAW format ). ProRes RAW isn't really 'free' to Apple because RED's patents are entangled in it. ( can imagine that Apple isn't in a hurry to attach a $x.xx fee to each iPhone sold if it is high enough. )
The quirk for the Zenmuse camera (and attached drone ) is that pragmatically it doesn't have to do playback.
At some point though ProRES RAW decode fixed function logic probably will come to Apple SoC on both iPhone , iPads, and Macs. For now though, the rest of the Apple ProRes supported products page (likned above ) is vastly longer for ProRes than for ProRes RAW. Random Joe iPhone user and can't see the video after it gets off the phone... there is not really high utility in that.
Not to mention the storage requirements for capturing 10-bit Dolby Vision ProRes RAW would fill up the iPhone insanely fast. Give it another 2-3 years and who knows. I suspect this ProRes will be some existing flavor geared towards smaller file sizes or bit rates (ProRes 422) or a new flavor of ProRes to take advantage of the Dolby Vision capture from the iPhone. Excited, nonetheless.
More to the point, decent chance that the en/decode for that limited ProRes is shifting to some fixed function logic support so also lowering battery consumption on processing also. I don't think Apple is loosing much sleep at all about "blowing out" the storage requirements. That just means folks buying bigger capacity iPhone storage which has sky high margins for Apple. ( and/or more data being transparently migrated to bigger iCloud storage footprint .. which means more services money. )
The other issue is that is more likely for stuff like TikTok/Instagram/etc social media clips than for shooting a feature length movie shot.