My company went through negotiations with Stripe earlier this year. We were more than 1.5% + $0.10 away from our current processor, and they wouldn't budge to even match our existing rates. They kept saying they are a better value, and offer more things for the price - except most of the "value-adds" we didn't care about (their only interesting things was the Stripe Checkout with Fraud detection - which requires you to use their hosted checkout page... which is a complete non-starter for a serious eCommerce operation).
Perhaps not a good fit - but paying a ton more per year in CC processing fees just because Stripe uses "AI!!!!" wasn't something we could swallow.