I voted yes.
The PHB is not a "normal" product like oranges, iPads, and novels. The PHB is ultimately an access key to a social network. And like all social networks, the larger the population, the more valuable the product becomes.
Think how useless the current Facebook would be if only had 1k people on it. It doesn't matter how nifty its features are...if there's no one else there, what's the point.
It's the same way with RPGs. Who cares if you found your perfect RPG, if you can't find anyone to play it with you? Or worse...to find the perfect system, only to later find out the product line is no longer supported. Thats the main reason I keep coming back to WotC's D&D line...the 3PP and other systems simply do not generate enough content, and do not have the playerbase.
Here, you have to put out what -- at least 2000 units to break even? Plus, RPGs tend to be self-fracturing as well...D&D, the biggest player, only puts out 2-3 genuine supplements per month...and not only is that material fractured by being system-specific, a big chunk of that is further fractured by being world-specific.
In my dreamworld, there would only be one unifying core system that everybody used. Such a system would need to be flexible enough to consolidate all forms of tabletop gaming, and yet strong enough to maintain a very high level of support in order to prevent gamers from scattering to the nine winds.
Such core system, the "core rulebooks" so to speak, would be published on the web utterly free of charge, to keep player barriers to entry low. Then, the products that would actually be marketed would be world-specific, thematic-specific, fluff-heavy, crunch-heavy, whatever the market demands.
The OGL was a good idea. Its just that 3E was not built to be a universal gaming system; it was built to franchise out D&D.
The brand name, player base, and product support of D&D, the universality of GURPS, the unification of the entire industry behind a single system, and a mystical core ruleset that would make tabletop gamers of all stripes happy...ahh, now there's a dream.