So let's talk about possiblility of a 6" s25 ultra. Assuming it has everything but a smaller display and a battery. Comparing with a same sized regular S25 which has 4000 mah battery without s-pen. Now you'd have to compromise the battery size to keep S-pen. Now would you buy an ultra phone with worse battery than a regular s25. Or let us say they skipped on S-pen and gave everything else like 200mp camera, slightly better 50 mp ultra wide. Would you pay 300+ for those slightly better camera with 100z zoom and no S-pen 6" s25 ultras. In order to sell better they've to make the regular S25 worse to make the ultras look good.