Website's aren't dying, so to speak.  You just have to understand how a website benefits a business differently than social media, and how that difference serves to the advantage of your customers/clients.  For instance, if you're a retailer who sells the same products over and over again, then a website is a good tool to use.  Also, if your business hours don't support immediate response (online chat) then a website that has a contact form may even be preferable.  If, however, the information about your business is constantly changing, and you do respond to inquiries within minutes, then social media is probably the better tool.  Many business choose to have both (or several); but most of those businesses don't understand the way that these platforms are used and the unique digital culture that is consistent with each platform.  The result is that we presume the website (which doesn't assume immediate response) is not going to be effective, when social media (which expects a timely reply) is where things are really happening.  Businesses can easily become trapped in failing expectations of their particular clients when they don't understand these expectations.  Fortunately, social media can be tailored to fit within the cultural expectations that the business is capable of meeting: linking to your website, offering e-mail response instead of instant messaging; but businesses that fail to set up their pages in the way that is best for them, will find themselves chasing expectations that they had never intended to meet.