Is it the most common scenario in development? Seems to me you&#x27;ve got it backwards. You&#x27;ve confused consumers of websites with numbers of developers.<p>For example I see far more job adverts for internal tools developers, which are going to be by and large desktop only, than mobile-first website developers.<p>So I&#x27;d have thought the number of desktop only web app developers vastly outnumber the number of mobile-first web developers. I think you&#x27;re wrong with the word &#x27;some&#x27;. Most is the word you should be looking for.<p>Don&#x27;t forget you&#x27;re emulating a phone without touch. It&#x27;s useful, but it&#x27;s only part of a mobile testing process. So you&#x27;re making what is a fairly broken process the &#x27;focus&#x27;, which seems pretty odd.<p>Mobile is also feature poor compared to desktop so generally needs less testing. It&#x27;s the less intense part of any site because of the form factor. That&#x27;s why you&#x27;re not playing Fallout 4 on your mobile, you&#x27;ve got a little companion app for it instead.<p>Finally, for most mobile websites there will be a desktop only admin section. And it&#x27;s desktop only because it has huge tables, with lots of sortable columns. On multiple pages. Common admin interfaces found in any website or app. So while a desktop site can often exist without a mobile component, it&#x27;s rare for a website to exist without a desktop component.