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Hey I am a Network and Systems Architect and the Edge is huge and the figure of 60% by 2025 is very real! Most webpages you visit are already delivered via Edge servers. Everything that uses a Content Delivery network is on the Edge. Most large files are on the Edge. All those streaming services Netflix, prime etc all use edge nodes to deliver their content. Its not all about latency it's also about reliability and speed. Video gaming you will find does not use Edge so much because people are connecting directly to each other or a specific centralised server as olayers tend to be distributed. Edge provides fast access to individual files which have been placed closer to you which is perfect for streaming services and websites.

Check out AWS and you will find the have jearly 10x more Edge DC locations compared to regular DC.
https://aws.amazon.com/cloudfront/features

I hope that helps.