Great Article! Definitely, don't be scared of the entrenched group. As the article discussed, if your domain is new and doesn't have authority, figure out how to go really deep on a topic. The experience of 99.9% of SEO experts that I know is that after 2 months at a job, they get tired/bored and have implemented 90% of the strategy that they are going to. There is always room to compete as new snippets, algorithm updates, updated information or processes occur.