These numbers need decompression computational complexity for completeness. I am not better off if I save 1ms downloading, but it takes 5-10 more ms decoding. Bandwidths in the 100s Mbps are common now..
Not for me. I'm in the United States in an urban area and mobile data is 1 cent per megabyte (my provider is Google Fi). Decoding is nearly pretty fast for me, but the time for page elements to download is in the seconds (not even milliseconds). And if there's any low signal (wifi or mobile data), then over 10 seconds is not uncommon.
