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This is foundation technology, and sometimes its necessary to get the tech deployed in advance of significant enduser application - more units deployed when the applications arrive in a year or two.

Although I don't find 5G to be exciting, deployment of 5G-capable devices is a similar situation. You may not get much benefit from a 5G-capable phone this year, but next year or the year after you'll be happy your current phone already has it.
 
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