Yes, exactly - The assumption that FOSS means that there is no financial support is practically archaic. I pay for any software that is useful to me, and many other people do too. There's donations, perks, exclusive content that subsidizes the core work, there are grants, etc.
Thank you for referencing my list! In case anyone wants some extra info: The frontends for Audire and Audile are open source. Audire uses the proprietary Shazam API, but Audile uses the open source APIs AudD and ACRCloud.
Note that the clients being FOSS is of little relevance because all they do is forward a recording to a blackbox proprietary service run by a for-profit company.
The code that has access to your audio and does the actual task at hand is not FOSS in the slightest.