Why so zealous? PayPal has been focused on competing for small business accounts with Chase, and WePay is attacking them with UX formerly focused on p2p payment

Why so zealous? PayPal has been focused on competing for small business accounts with Chase, and WePay is attacking them with UX formerly focused on p2p payments, and moving into developer mindshare. PayPal is moving (slowly) to defend (but their UX is not there yet). My prediction is that WePay will convert enough people quickly enough to survive. With what I see from ebay/paypal product quality, I imagine there's a huge opportunity to creep into their markets one by one.