What makes you think that? That would be kissing off most of the Starwood FTs.
MaRiot knows FTers are a negligible part of the the spg programme members. Given the very different way of earning / renewing status in the two programmes, it is quite certain reshuffling will occur. And the new top tier will be nowhere near as beneficial as the current SPG Platinum status.
Whoever codes a paid cheat sheet app for smartphones that explains how many rolls of toilet paper a MR Super Platinum will get at JW MaRiot versus Courtyard by MaRiot will make a living from it.