I think GW strategy is not geared toward a community, but impulse buying. You see this everywhere. GW does support the community by giving them the bare minimum (FAQ, Erratas, etc.), but their main push seems to be to have people, new and old to the game, buy the new thing on their page.
One just has to look at all the limited editions of items. They produce a run of them, make their profit, and feel no obligation to the community to further support the product or even provide it. I really found this out with Bloods in the Badlands. Here you have the OFFICIAL siege rules for 8th edition. And they limited the number of copies? You can't get these rules anymore? That is just silly, but it worked. They made their print and profit and do not need to provide the rules to everyone, even thought it is just a supplement.
What does this do? The next time siege rules come up in a limited edition print, the product will sell faster.
In addition, I think GW hopes to sell to new people over the long term players? Why? Because a new player will buy the box set, get excited about the game (it new to them, it is a good game for the deal, etc). Now, once into the game, they will buy a lot for their new chosen army. This is the key people GW wants to target. Me, who has two armies and buys stuff occasionally, I'm not their target, because I have already spent my money. That is why GW stores focus on new players and, although some have good communities, attention to a potential new buyer always overshadows old players.
I don't hold this against GW. They are a company and they are there to make money. Like mentioned above, anyone who thinks GW is not in for the money is IMO too idealistic.
Ambrose