It actually does, but in a bit non-obvious way if you have been tricked by Matt's/Automattic's wording.
The very core of free software (as in beer, not the fsf definition) is, well, dramatic reduction of cost for customers. Opening the source for modification is merely in expectation that some of the customers would contribute something back. The relationship is highly asymmetrical. Therefore, Takers in Drupal lingo are inherent, consequential part of the deal.
Drupal's system just goes one step above in recognizing those who contribute back in a mostly good faith, unbiased effort.
The typical business models behind FOSS are professional services (support and training) and commercial extensions (open-core model). In the latter model (or both), the governing body makes the majority of contributions and consequentially (key word) steers the project. For example chromium is the way it is not because Google said it should be that way, but rather they put the effort to implement their wishes.
Some FOSS-on-the-surface projects reject contributions that do not align with their commercial vision and even go as far as to chase legal action against forks. Both examples have been discussed in this very forum quite thoroughly.
This brings us to the problem with wordpress, wordpress foundation and Matt/Automattic. The governing foundation is generally established so that the major Makers and Takers (remember, entities can exist in Maker-Taker duality) do not go into open warfare and in turn sabotage the whole FOSS project. Wordpress itself is a FOSS project, directly enabling both Automattic and WPE. WPE is a clear Taker here, no objections to this judgement. However, Foundation is for all intents and purposes Matt/Automattic. When Matt and WPE did go into open warfare, this lack of separation between commercial and charitable operations meant that Matt abused his powers over WPF, weaponized it and used it against WPE in Automattic's fight against WPE.
This is where WPF-Automattic relationship is totally out of the norm in open-source/open-core business models.