I sneezed this morning. I guess that was a communication to my wife that I needed Sudafed, so you could say I started this morning being a marketer for Johnson and Johnson (or was I promoting the GetWell Village Pharmacy?)
If you wanted to bend the definition of marketing a ridiculous amount, then I guess you could. However, you seem to be the one advocating against that the most.
No one needs to be a marketer for anything for a marketing process to take place.
Yes it is. But the definition doesn't mention just process, it's specifies commercial process and word of mouth ain't.
Commercial just means that the process is involved with commerce, and commerce describes the concept of an interchange of products and services. It doesn't really mean much.
Anyway, I wouldn't say Princeton has the absolute true definition of marketing, and I have absolutely no reason to find their definition more credible than anyone else's.
Just look at dictionary.com:
"1. the act of buying or selling in a market.
2. the total of activities involved in the transfer of goods from the producer or seller to the consumer or buyer, including advertising, shipping, storing, and selling"
Or Webster:
"n. 1. The act of selling or of purchasing in, or as in, a market.
2. Articles in, or from, a market; supplies.
3. The activities required by a producer to sell his products, including advertising, storing, taking orders, and distribution to vendors or individuals."
Taking some of those at face value could literally mean ANYTHING - even a sneeze

. Webster is even the first definition to explicitly mention activities by the producer (unlike the rest of them) - which in my opinion is far too precise to be a worthwhile definition, but that's just my opinion.
Either way, we could spend ages picking holes in one of the many varying definitions out there.
Look we're aren't ever going to agree on this so let's move on.
Alright

.
That's reasonable and that's how business is. There have been some rants earlier by others about marketing being at the centre of all business activity and no business function being untouched by marketing. Several of my posts were targeted at that ridiculous assertion.
Well I'd agree that it isn't at the centre of ALL business activity. That doesn't make any sense. If a computer technician is fixing a computer, then the fixing of the computer is at the centre of the business activity at the time. Not the marketing.
However, that service certainly wouldn't have happened without at least some form of marketing (both of the definitions I posted up there fortify that point), so whilst it might not be at the absolute centre of the business activity at the time, it still plays a current and integral role.