In my opinion Google Hosted Libraries[1] are the best way to go if you're serving "big" commonly used JavaScript libraries to folks.
One of the major upsides is that it's so heavily used, that a user probably already has it cached in their browser. At least that's the idea, not sure of actual numbers.
I agree with you but to pull number out of thin air. I would honestly be surprised if 50mbps+ LTE mobile internet is even 1% of the connected internet.
One of the major upsides is that it's so heavily used, that a user probably already has it cached in their browser. At least that's the idea, not sure of actual numbers.
[1]: https://developers.google.com/speed/libraries/devguide