I see a lot of sites grow to thousands in monthly revenue fairly quickly and sell quickly for a minimum of 40x monthly multiple. There are tons of resources and tools out there to build sites that will generate a lot of organic traffic.

It takes a lot of work but if you have the resources practically all of it can be outsourced. What I do is learn as much as I can about each role that is needed, then I hire virtual assistants and train them to do that role. That helps keep costs down since you aren't hiring an "expert".

I'm growing a couple sites right now that I haven't written a single word for or taken a single photograph because I have some awesome writers and a photographer. I've also never posted a single article to Wordpress because, you guessed it, I have an awesome VA that I trained to do that for me. I even have a content manager (the highest paid role) who manages the writers and tells them pretty specifically what to write.