I found Joe Goodman's posting extremely valuable.
While I don't know why Goodman felt it necessary to dedicate the latter part of his post to the fate of 4E in general, I think the first bit, about Goodman Games' fate within 4E, is undoubtedly valuable.
It shows that Goodman picked a really healthy business model. One which works for him, and one which he only decided upon after careful deliberation.
I wish he had said a bit more on why the specific partnership with 4E worked out so well, meaning his success as a license taker of the GSL.
Personally, I can only collect two tid bits of info from the past months.
First, when 4E designers first announced their "Points of light" setting ideas, and the idea of the new core races, Joe Goodman and the rest of the "World of Aereth" design team were jumping up and down with joy on their boards. Basically, Aereth already IS "points of light" and Dragonborn already ARE key players in their world. For them, 4E was moving in a direction they were supporting ALREADY in their product. This sets Goodman Games apart from companies like Paizo or Necromancer Games who felt 4E was moving in a direction not in line with their own product expectations for D&D. (Something Paizo and Necromance Games have said time and again.)
Second, the Dungeon Crawl Classics line hasn't always been too keen on rules precision. As someone who isn't keen on rules precision when writing modules myself (not that I'd ever publish mine), the product line has my sympathies. However, it also caught considerable criticism for that. (You can read up about this on a mega-review of the ENTRIRE 3.5 DCC product line on RPGnet.) So the advent of 4E, with its generosity to DMs and designers to play fast and loose with rules - say, when designing monsters, when designing traps, basically when statting out something not already covered by the rules, because the core rules (contra 3E) don't stat out everything already - was a godsent for Goodman Games' DCC line.
In the latter vein, I'd recommend you to read a wonderful interview with Harley Stroh here:
Interview: Harley Stroh « Kobold Quarterly
In short, I wish Joe Goodman would be more liberal about
his experiences with 4E online and even less mind the general question of 4E's doing well or not. Let's hope he keeps posting, do I'm sure he's got better things to do.