Organic post vs same content as ad? What works better?

Let's say I have a product example -

1. Fashion creator posting content and integrating my prosuct

2. Finance creator talking about my financial app/integrating it in their content

3. Comic creator integrating my product in their content

Now I'll get some organic views around 1 million and I spend let's say 10000

Now I use the same content in ads (optimised for purchase) and I'll get 1 million views with 1/10th the cost so around 1000. I'll also get higher purchases because targetting and easy CTAs

Now my question is. Does it make sense for organic posting? If yes then why? If no, then why not?

I am confused because sometimes I get to know about products for which I would have never heard via ads (don't show any signals or interest for meta to understand) But, also when I ask creators to post videos, I always find it better to use them in ads and not post because I get higher purchases via ads.

Some say use it for awareness (like I said some products I get to know about only organically) but how do I then measure how much awareness is effective in long term?