0th world problem
"The notch" is such an irrelevance it signifies mobile phone design has reached it's zenith. Anyone seeking interesting work in product design should look elsewhere.
Here's a suggestion: if phone companies are so concerned about size, why not invest some R&D money in creating thin but effective phone protectors, or does that not align with your profit motive? They're in common use, but they are chunky and run counter to the tactile experience of using an expensive phone. But the more expensive the phone, the more worthwhile the phone protector.
If a phone can detect it's falling, it could trigger the protector to flare up like an airbag to provide better impact protection.
Another problem: if manufacturers produce edge to edge displays, the phone protector can't grip around them without obscuring the display.