star trek - Where were the advanced species and civilizations of ST:TOS during the war against the Borg?

Recently, I've decided to make it a personal task to watch through ALL of Star Trek. I grew up on TNG and watched it whenever I could. I mention this because I have a distant recollection of many of the stories I loved from TNG, but now that I'm more thoroughly watching through the original series, I'm starting to have personally "haunting" questions that make me curious about the Star Trek universe and why certain events played out the way that they did.

I've noticed that in TOS throughout at least the first season alien races tend to fall into two classifications-- humanoid races that, in regards to intelligence and strength, are much on-par with humans. This includes Vulcans, Romulans & Klingons and a few other incidental races that come and go as needed for a particular story.

There is also a second set of alien races that are not slightly but are rather significantly evolved beyond humans. These races tend to appear in one episode, do their "unbelievable" acts and conclude the episode assuming we never hear from them again, often for the sake and safety of humanity. These races include the people of Talos IV that could manipulate the perceptions of minds, the beings from "The Squire of Gothos" that could control entire planets and the Organians which were excessively peaceable people that were capable of seizing up all weaponry aboard all Klingon and starfleet vessels in the vicinity of their system.

QUESTION

Much of my knowledge of the Star Trek universe comes from my childhood watching of TNG. In TNG we saw multiple interactions of the Enterprise crew with Q and his race. The Q was, to my knowledge, the only major race encountered that was significantly more advanced that humans. This is quite a juxtaposition to season #1 of TOS, where in every few episodes we see a new race that has unbelievable powers capable of doing nearly anything imaginable.

It is my understanding that the Q stayed out of the galactic war with the Borg because they believed in letting the rest of the universe play out at its own pace, in its own way. This is why they never wiped out the Borg or provided limited protection for the United Federation of Planets.

However, as outlined above, in TOS many exceptionally intelligent and capable races existed that could take control of people, manipulate space/time or simply do whatever they wanted to do.

Where were these races in the war against the Borg? Were any of them ever contacted by starfleet and asked for assistance? Were any of them assimilated? Were they just out of site and out of mind as if they weren't part of the galaxy?

In my opinion, from the perspective of TOS there were NUMEROUS races that seemed capable of stopping or potentially destroying the Borg. Where were they during the time of The Next Generation and its subsequent movies?

I'm not really asking for a speculative answer, however, I am curious if this was ever addressed in any post-TOS material whether on the television show, in comic books or novels.

Answer

One of the key societal traits of the "god-like aliens" that the crew of the Enterprise encounter is one of deep withdrawal from the affairs of the races that remain in the galaxy. Q was relatively unique in that he/they were both powerful and still wanting to remain in engaged with the junior races and even then, he was a single rogue individual looking to get his yuks from us.

It's helpful to compare this with the Douwd (in hiding), the Thasians (hidden), the Talosians (hidden), the Organians (hidden), the Metrons (in hiding), the Prophets (obsessed with a single planet) and the Edo God (obsessed with a single planet) all of whom would potentially be good allies, but in reality probably wouldn't care. Simply put, there really aren't that many potential god-allies that can be called upon to help the Federation against the Borg.

On top of that, when advanced aliens do step into conflicts (the Organian Peace Treaty being a prime example), they're just as likely to view the Federation as being in need of a smacked bottom, in much the same way that you'd punish two misbehaving children without undertaking a lengthy investigation into who's most in the wrong. True, the Borg might get put back in their box, but there's at least as high a chance that humanity will end up being confined to Earth for the foreseeable future.