Nobody is doing anything with FedNow yet because it's not out. But if it works it will grow, just like in the EU where they have similar things and they're used.
When I said "nobody is taking FedNow" I meant nobody is going to be taking FedNow at the point of sale after launch in July. It'll work just fine, but it enables things like Cash App, Zelle and Venmo to avoid using debit rails. It's quite unlikely it'll actually exist at cash registers. Out of curiosity which product are you referring to in the EU? To my knowledge they just use Visa/MC Debit or local debit schemes at point of sale.
