Can't really think of players we've taken that the RFU have 'invested in' anyway, so not too sure why we're mentioned in the OP or the article. There's guys who come over based on the Exiles program who are usually picked up after playing youth by an academy anyway, and made a very clear statement about wanting to play for Ireland from the get go, every once in a while. Surely a lot more Irish guys playing in (not for of course) England than vice versa, and on the poaching side of things, England has drawn in a lot of immigrants from around the world. Just by glancing at names Snoop mentioned their national team has clearly benefited from that and continues to benefit from that, and if someone with foreign parents slips through the cracks to another country it's hardly a big deal.
On Scotland and Wales, I haven't been keeping track at all, but I got the impression Scotland took a lot of their guys from SANZAR nations and not so much England, but someone let me know. Maybe it's to do with the plans they have going forward? I don't reckon Scotland will be a big draw for top young English guys anyway, but they might pick up the odd diamond in the rough I suppose. Which guys did Wales take? Genuine question, I don't really know.