Unless google has tweaked their algorithm to give domains with a lot of high page ranked pages and automatic boost (and this may be the case but it has never ever been conclusively demonstrated) google is still indexing pages.
There is a 'ban hammer' that has been applied to domains wholesale in the past, to give all the pages in a domain a PR of 0, but a PR boost across a domain has not been seen 'in the wild' as far as I know.
A good test would be to find out-of-order wikipedia pages that have content that is clearly of lesser value than pages that are ranked lower. That would be fairly conclusive proof that such a boost indeed exists. I haven't seen it though, but I'm open to change my mind if someone has some real proof of that.
There is a 'ban hammer' that has been applied to domains wholesale in the past, to give all the pages in a domain a PR of 0, but a PR boost across a domain has not been seen 'in the wild' as far as I know.
A good test would be to find out-of-order wikipedia pages that have content that is clearly of lesser value than pages that are ranked lower. That would be fairly conclusive proof that such a boost indeed exists. I haven't seen it though, but I'm open to change my mind if someone has some real proof of that.