Do you the best way to get high rankings in a search engine is just to have the keywords in your domain? If so, would it be possible to just buy a few domains, and have them link to your site? Regards
its not just the keywords in domain If that was so easy, everyone would be geting high rankings with their domains There's a lot of info in these forums - keep reading and you'll discover a lot of new things
to have your major keyword in the domain name definitely helps it is ONE strong plus-point to get you into #1 SERPS on at least several keywords combination that include your domain-name but even without such domain name you still can get No 1 SERPS you just have to work better and harder
having a keyword rich domain is not the only way to rank in in SE's but it is one of the factor. Just like they said there are lot of ways that you can do to rank in SE in an ethical way.