TL;DR: Native text recovery would be an excellent default browser feature (like native pop-up blocking) and shouldn't require extensions.
Ever type a long passage into a browser's text box and then somehow lost the text? Maybe your form got rejected and the site developers wiped the text. Or the site's servers got overloaded with traffic just as you hit "Submit". Or your browser crashed. Or your internet died.
You don't need text box caching...until you need it. A few extensions have been developed purely to solve what I call a genuine browser flaw: save/cache text inside text boxes so it can be restored after an error/crash/bug.
Having this feature built-in to Chromium Edge would be a seriousquality-of-life improvement for casual and professional users. I'm sure everyone has suffered at least once, but unfortunately not everyone will have had downloaded an extension. I understand being lean, but this feature is so essential, I'm shocked still neither Chrome nor Firefox include this feature natively.
Why it should be integrated natively instead of simply using extensions:
Users won't think to install text area caching extensions, untilafter they've lost important text that now can never be recovered. (like buying a padlock after you've been burgled)
The browser has a trusted relationship with the user, so users can feel safer rather than needing to trust that third-party extensions aren't also caching your passwords or credit numbers (no ill will towards these hardworking developers solving a genuine problem!)
Perhaps caching at a browser-level could be more robust, caching more text in more areas
Casual users will appreciate Chromium Edge more, making it a stickier browser for them that they prefer to use (and help differentiate Edge from other Chromium-based browsers)
Why this might not be "a love fest of great rejoicing and thankfulness"
Of course, stringent privacy measures would be needed to ensure that this text isn't cached for inordinately long and/or made available outside the local browser environment
For sure: we have "autosave" functionality in Word, PowerPoint, Outlook drafts, these forums etc. I think bringing "Autosave" functionality to the wider web would be an unexpectedly small, but useful addition.