I have long believed and advocated that "...you can’t build the foundation of your business on someone else’s platform...You need a website and to be building an email list. These are assets that are yours..."
I found this PDF file dated October, 2015. I'm not sure when it was actually written. I'm not sure why/how it ended up on my computer, but this was about the time I was moving my computer skills from my full-time job to create a viable business (A Better Computer, Inc.)
If you're in transition, then you may find this valuable advice, and a worthy suggestion to follow!