This right here, this is the main reason why we will never see macOS on iPads, never have true phone calling on iPads, never see SIM-card slots in MacBooks, never get touch on any Mac desktops or laptops, no Face ID outside mobile devices, only ever have a limited number of ports on iPads, etc.:
If Apple were to put a ful macOS on iPads, with a UI optimised for display size and touch, it would instantly kill nearly all MacBook Air and 13" MBP sales as most features on iPads Pro are superior (better speakers, better screens, Touch and keyboard and trackpad, LiDAR, high quality cameras, etc.) but priced somewhat similarly. Most consumers are on a budget and would opt for two-for-one solution even if the macOS on iPad experience wouldn't be as optimal as on a desktop or laptop.
Apple would only put out a do-it-all "double"-device like a touch-enabled MacBook or a macOS iPad Pro if it gets to double charge us. So think iPads Pro that start at around $2000.
And to those of you that seriously think macOS wouldn't work on an iPad because the screen is too small -Why do people buy and love their 13" MacBooks? Is that 0.1" difference between an iPad Pro and a 13" MBP really the thing that suddenly makes macOS usable? You have got to be kidding me.
The best we can hope for is Apple porting touch versions of its pro apps to iPadOS. But as doing so would kill many, many MacBook, iMac, and Mac Pro sales, I highly doubt they'll do it especially since iPads have been powerful enough to run pro apps for a very, very long time.