Showerthought: I said a logo redesign was a waste of cash, then I watched one store lose 60% of its regulars in 3 months | Brand Management - Opinions Matter
That store didn't lose regulars cause of the logo itself, they lost them cause of the price hikes or bad service that came along with the rebrand. Plenty of places slap on a new logo and keep every single customer. In my experience people blame the most visible change for stuff that was already going wrong.