This of course takes into account that the majority of Google users now search on mobile devices, as opposed to desktop computers, and so a shift needed to happen somewhere at some point.
The fact now is that businesses will need to adjust to this new algorithm.
Even if the majority of your users are not searching for your company or industry on mobile devices, you will now need to take mobile search into account for best practice SEO.
Mobile-first indexing: how it works
Google announced that to date, its search engine has prioritized analysis of desktop version of a webpage s content rather than mobile version in ranking on Google results pages—even though the majority of Google Searchers are using mobile devices.
As you might expect, they found this to be problematic, as it did not account for the mobile version in determining quality of web pages.