Aren't there studies that show that slower pages decrease conversion rates though? Managers might like that... but then again, we really need these share buttons and huge image headers and 10 tracking scripts and Raptorize.
And as soon as the buttons and the scripts are delivered from other servers, you effectively can't speed their delivery up. So you can't claim even the 20% you assumed at the start:
"Hey boss, we can't even dream to deliver the pages as Google does, let's just pay them for all the things we want to be our internet presence."
And as soon as the buttons and the scripts are delivered from other servers, you effectively can't speed their delivery up.
Aside from the fact that choosing to use those sorts of resources is optional, those (facebook/google+ buttons and likes, etc) are virtually always asynchronous loads -- they do not hold up the render of the root page whatsoever. So if your target is displaying the recipe in 200ms, but the Facebook button takes 400ms -- guess what, the recipe page will still be shown in entirety in 200ms.
