Because the HW part of the UX has been commoditized to a giant screen where the big difference in style and UX is made by the SW and UI.
In fairness LG has tried experimenting with different HW UX over the years to distinguish themselves[1], and they went bust doing it because consumer weren't into that and voted with their wallets to those making boring phones like everyone else.
If consumers want large pocket Netflix machines you give them large pocket Netflix machines if you want to stay in business. They can stay irrational longer than you can stay solvent.
[1] https://www.androidheadlines.com/2021/04/top-5-best-unique-l...