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.

Why are these people working for you and not just doing their own thing?

They get paid immediately. It requires capital to run this business. There is always a risk I will lose everything I invested into it. Running this business requires several different roles.