A variety of methods can increase the prominence of a webpage within the search results. Cross linking between pages of the same website to provide more links to important pages may improve its visibility. Writing content that includes frequently searched keyword phrase, so as to be relevant to a wide variety of search queries will tend to increase traffic. Updating content so as to keep search engines crawling back frequently can give additional weight to a site. Adding relevant keywords to a web page's metadata, including the title tag and meta description, will tend to improve the relevancy of a site's search listings, thus increasing traffic. URL canonicalization of web pages accessible via multiple URLs, using the canonical link element or via 301 redirects can help make sure links to different versions of the URL all count towards the page's link popularity score.
In the real world, its not so easy. For example, I have 2 niches where I’m trying to use your technique. By keywords, its Software for Moving and Free Moving Quotes. I have 2 websites that related to each of them, emoversoftware.com (emover-software.com as initial, they linked together) and RealMoving.com ( for latter keyword). So, to begin with, none of those niches has Wikipedia articles, so your first suggestion will not work. But, in general suggestions, you are advising to get backlinks (of authoritative sites of course). But check this out – my site emover-software.com has only 4(!) backlinks (https://openlinkprofiler.org/r/emover-software.com#.VXTaOs9VhBc) and, however, listed as #1 (or #2) by my keyword. (moving software, software for moving, software for moving company). RealMoving.com has more than 600 backlinks and is way back in ranks ( 170 and up) by my keyword. Even though those sites have different competition, its still makes no sense! It doesn’t seem like Google even cares about your backlinks at all! I also checked one of my competitor’s backlinks, its more than 12000, however, his rank by keyword related to moving quotes even worse than mine!.
This post and the Skycraper technique changed my mind about how I approach SEO, I’m not a marketing expert and I haven’t ranked sites that monetize really well, I’m just a guy trying to get some projects moving on and I’m not even in the marketing business so I just wanted to say that the way you write makes the information accesible, even if you’re not a native english speaker as myself.