I'm not sure how WotC's revival of the moribund D&D franchise with the release of 3e --a fairly radical departure from the AD&D/2e framework-- can rightly be seen as "digging their own grave".WOTC dug their own grave here...
As for the release of 4e... well, it was a failure only in the sense it wasn't as big a success as 3e. I believe it still made money, it certainly has its fans, and it represented a bold, and IMHO interesting take on the game. But I don't want to get into edition-war sniping... and I don't certainly agree with all of WotC's choices, but I think think overall they've done well, and their biggest problems are related to their size, costs, and market expectations, not to the design choices/product lines.
Yes, and I disagree with that. A healthy gaming community plays the games that meet it's needs, with people playing what they want to play. At present, that means the D&D community is effectively playing several different, though related games. Equating "health" with a lack of choice seems, I don't know... old-school Soviet, perhaps?The original poster wrote a healthy gaming community promotes a stable rule base and a unified player base.
I brought up the prevalence of house-rules and game hybridization to stress the point the D&D community was never all that unified when you looked at what was really happening at the table.Being able to radically house-rule your game doesn't contradict either of these goals.
One: I have. And it's fine. People have been arguing over taste since the invention of hobbies (which I believe dates back to the move away from the reliance on subsistence agricultureIn comparison to edition fatigue, I haven't heard of house rules invalidating the investment in time or money someone spent learning a core rulebook, causing players to quit campaigns and gaming groups, discouraging players from joining new campaigns, or causing anything like an edition war/divided community we see now.

Two: I think the "divided community" thing is grossly exaggerated. And fandom/hobby community will have its factions. You could see it as a sign of the communities health that it has such, ahem, involved participants wanting to engage in, ahem, spirited disagreements.
Three: I think the whole "my investment in time and money being invalidated" argument is, well, crap. Most gamers I know like new rules, new games, new gaming experiences in general. They enjoy new product lines. It gives them something to buy

Now people online... well, like they say, the Internet was created for pornography, cat photos, and vitriolic arguments.
Four: I'm afraid, in the end, this all boils down to "I want the community to like the things I like, and play the I want to play". I understand the sentiment, especially for people who don't live in areas rich in gaming opportunities, but at the same time I don't have much sympathy.
I've got an extremely... idiosyncratic take on D&D, as anyone who read the Story Hour based on my old 3e campaign, or listened to me describe our 4e game and its PCs, can attest to. This gives me a certain perspective. I can't expect the rest of the community to share my tastes. I can only be happy (and thankful) when I find people who do, at least enough so we can get together every few weeks.
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