Stop to think for a minute about all of the content (IP, PLR, etc) that you could get your mitts on.
It's virtually limitless! But so are the ways all of this content can be modified and repurposed - using the A.I. tools that are everywhere lately.
Sure, A.I. doesn't usually produce top-quality content that's ready for prime time, at least not on the first go-round, but...if the content/IP that you have is already of reasonably high quality, then the A.I. tools can produce very good and useful output.
A.I. can sculpt the content to be a better match for varying audiences, for example. It can change the 'voice' of the material (logical; authoritative; poetic; storytelling; brief; expanded; etc). Not to mention that it can translate into virtually any language very accurately.
So try looking at all that content as a starting place, not an ending place. If it's not perfect for a given audience, then maybe you can make it perfect for them.
And don't forget that A.I. can also help you figure out alternative audiences for just about anything that you have.
I have tons of different A.I. tools at this point, and I'm wondering if anybody else would like to know what some of them are, and if others have some they recommend.