The only way to do that is to have worse cameras or double the phones weight, so neither are viable. A lot of the Chinese phones are using new battery tech that gives you more life for similar weight but I'd be surprised if Apple adopted that early.

I’m getting nearly two days out of my 17 PM.
Has it sold poorly?
My work phone is exclusively chat apps and MFA, it's an iPhone 13 and at least 4 years old. The battery health is at 90%.What's the actual usage of it thou? people at my place don't make normal phone calls or emails anymore. Everything is via teams.. consistant accessing of auth apps for MFA to access systems.
This is the reason why I tend to carry a work iphone and personal phone around with me. We are on a two year cycle with our work phones as the batteries are pretty much duff by the end of the second year.
Would need some new glass/plastic tech to make this work. I think Corning have some bendy glass for their latest fibre optics cables so maybe that’s on the cards.I think the fold will need another generation or two to iron out any kinks..no pun intended.
iPhone 15 Pro Max still going strong and no urge to upgrade here!

Touch ID is far superior to Face ID. Maybe my phone just doesn’t like my face, but I seem to constantly put in my pass code on my 15 pro. My MacBook Air Touch ID is glorious.
As long as the price isn’t bonkers I’m leaning heavily towards a fold and trading my 14 Pro and iPad Pro in