I don't argue that Zelle is successful but it certainly did not kill Venmo. Venmo is alive and well. I think Zelle is more useful for things like tenants paying landlords, while Venmo is more for splitting a restaurant bill, so it doesn't shock me that Zelle is processing a lot more coin.
> while Venmo is more for splitting a restaurant bill
One might assume this feature will be built into banking apps as time goes on and instant payments are ubiquitous. It's already in my Chase iOS app [1]. I argue it's a feature, not a business. I concede we'll have to see what happens when deposit accounts at real banks are given access to instant payment functionality.