"Unfortunately, the rate of change is incredibly large for Internet-facing applications. Intranet-facing applications are left behind. As browsers evolve, which they do rapidly, unpredictably and without compromise[1] a disparity grows until you need two browsers."
This could be an argument for buying in cloud services (which you expect to be updated and maintained as technology evolves) rather than building solutions internally. Not always an option but where it is this seems like a good argument to buy rather than build, and if possible buy from a company which seems keen to move with the times and allow you to upgrade your browser in future without fear of breaking something