The best etymology I could find says the definition of marketing has changed like this:
1560s, "buying and selling," verbal noun from market (v.). Meaning "produce bought at a market" is from 1701. The business sense, "process of moving goods from producer to consumer with emphasis on advertising and sales," is attested by 1897.
Is there any more detail about how/why the current meaning started being used and why the older meanings fell out of common usage?
The etymology above lists the three different meanings; here are some more details:
- The first wiktionary definition is: "Buying and selling in a market."
- Related question: Have you done your marketing today?
I never knew "marketing" had these other meanings until I started looking into its etymology. I always thought marketing meant something related to promoting goods/services for sale. I never thought it had anything to do with consumption, too.