You Inc, Entrepreneur, Homepreneur, Globalpreneur & Infopreneur
Google wants website owners to focus on building a mobile site first and then adding other features for devices like tablets and computers. The reason for this is that many resourcesdon't work well enough on smartphone screens (they have inconvenient navigation, take a long time to load, etc.), and about 60% of the time users browse pages from mobile devices.
We also remind that in March 2021 Google intends to finally switch to mobile index and encourages publishers to prepare in advance.
With an increase in the number of people browsing and buying on smartphones, any website that does not support such users will lose out and find its ranking on the search engines deteriorating.