Looking to start an ISP, what am I missing

Hi,

Let me know if I’m in the wrong place

So I’m trying to start my own isp by following this guide https://startyourownisp.com. I don’t plan on doing a wireless backend it would all be wired.until it gets to CPE I understand that it’s missing a few things a few things like bgp. How can this be setup? Is there a way that I can have this set and managed automatically? Is there anything else here that I may be missing?