I do not think the IFold will push the Samsung Fold along as there is already likely better competition from others already driving hardware features.I am hoping the foldable iPhone will push Samsung to put all the high end cameras into the Fold without a major price increase. That and battery is the only thing I see as an area the Fold falls short of the S25 Ultra.
However
Given Samsung are going to be producing another +10m folding screens for Apple I hope this will help reduce costs and so give Samsung some wiggle room for improvements without price increases.