No offence meant, honestly, but what's your definition of entrepreneurship? IMO, you can run a successful business without being an entrepreneur.
The point of that post, which you missed, was that words change their meanings over time. When I think of love now I think of it differently than I did when I was seven, and I'll think of it differently when I'm seventy than I do now.
You're splitting hairs talking about definitions, what you're looking for isn't an English lesson what you're looking for is a confirmation that someone with low capital can still succeed in an ever growing competitive world.
It's a completely natural thing and every person in business has at one point felt that same way. I still feel it every time I buy a stock or an investment property when multi-million or multi-billion are in indirect competition with me buying and selling.
The reality you have to face is your ideal is something that simply doesn't occur often in the real world.
...Don't be afraid or discouraged by investors or the complexities of business at a higher, or more difficult level, than what side of the industry you're on. Embrace that companies like Google, YouTube, etc utilized their vision along with money to succeed in a big way.
My Grandfather always used to tell me, "Money isn't the main thing, but it sure is nice". Your idea, vision, plan, or whatever else you want to call it needs to be there... and in some cases, as many of us here can attest, you don't need outside capital. But no one here worth at least a few bucks will tell you that having money couldn't of quickened the process and made them succeed and grow at a rate faster than they could completely self funding themselves.
To answer your question though my definition of an entrepreneur (keep in mind that there is really no concrete meaning for any word, they are always ever changing) is someone who takes a risk regarding a new venture, business, idea, etc and uses every possible situation and asset at his or her disposal to further that venture, business, idea, etc.
All you're missing is that last part. The, as you say, true entrepreneurs of this world are those who had a business, venture, idea, etc and crushed all competition in their way by making strategic partnerships, accusations, etc and of course bringing on investors to fund those items.
Look at any billionaire or millionaire worth a substantial amount and 100% of billionaires and 90%+ of those millionaires at some point raised capital and/or made strategic business partnerships to further themselves.
Think of it like Justin Bieber... if he made YouTube videos, became a bit popular, sold a few CD's, told record labels to fuck off for the reasons you give above, made a few more CD's (all self funded) how far would he be?
Instead he gave up some of his future earnings to partner with Usher and has blown up to a degree that only a few have ever reached. He makes 300k a performance, and that would never have been possible without cash infusions and partnerships.
Ironically the same thing happened with Usher. Get where I'm going?