eBay Moving to Single Checkout Process by June 30, 2011
Found on eBay Ink Blog on Wednesday, 01 September 2010

eBay will be moving to a single, consolidated checkout process, and effective June 30, 2011, eBay Checkout will be the only checkout process on eBay.com.
A single, familiar checkout experience is key to reducing confusion and improving how people shop on eBay. We've been working with sellers and providers for some time and will continue to do so for a seamless transition next year.
Reducing confusion? That is a nice sounding way to say that eBay thinks users are too stupid to make a payment without their help. eBay's job is to offer a platform for sales, nothing more. How people pay and get paid is up to them. If eBay decides to force everybody to use their services and Paypal only, then there's nothing more to do than stop using their service. Not to mention that in several countries, this decision will be legally challenged and most likely deemed illegal.