To understand this the best thing to do would reverse the question. Hopefully, on reversing the question it will be easier to comprehend why this many companies that gain prominence in the industry immediately want to take advantage of the platform Wikipedia. Wiki is short for Wikipedia and the platform has an option known as create a Wikipedia page that allows you to create a page on Wikipedia for either yourself or business.
Though it is not that easy since Wikipedia has a lot of compliance and rules that require to be followed or than they remove the page if breached in any manner. So yes Wikipedia pages are quite reliable to a point but it is best to gain initial inform on any question.
Another major reason why almost every entity is so eager to make the best use of the platform by featuring their business is that firstly people approach Wikipedia for almost everything as if resides with unmatchable amount data. Second, it has outreach to markets across the globe. Thirdly a business page on wiki will ensure that you can with the easy project your business to the world at utmost ease and no hassle.
So coming back to the reversed question. Why shouldn’t a business eagerly anticipate to utilize the platform of Wikipedia by projecting their entities on a wiki page?
Since by creating a wiki page they get exposure to an unmatched international market, where visitors view the platform in millions on a daily basis and Wikipedia pages are ranked towards the top in any searches made on google giving a higher chance of attaining conversion as well as marketing. These are just a few of the pros for any business to have their Wikipedia page. So yes it is justifiable as to why so many companies want to make the best utility by creating a wiki page for their entity.