I've been probably been taught not entirely properly on the subject, as for me, Capitalism is also survival of the fittest. But it seems that is Corporatism.
You beat me to it, sir!
As with any discussion, a definition of terms is critical.
My definition of capitalism is very similar to your own. But I know that Heat has a different definition. I freely admit that my definition carries with it a higher degree of Corporatism than his does.
For instance, we have an acquaintance who is currently employed in a part of the world where sand and heat predominate. This fellow has personal knowledge of a recent visit by a prominent member of the US Congress. The visit was billed as a diplomatic mission, but the truth is that it was ENTIRELY focused on promoting the business enterprise of the Congressperson's spouse. The US taxpayer paid for the whole thing, including the security detail that routinely accompanies prominent Congressional figures.
See, that to me typifies "capitalism" as we presently know it in this day and age. I note, for example, that if a certain Italian restaurant specializing in pizza, potent potables and palaver were to experience a slow down in business, NO government instrumentality would be rushing to ensure its survival or sending Congressional delegations to foreign lands, begging them to order their pizza from Charlie O's.
Within the terms of my definition, we see that most of the effort of the US diplomatic mission around the world allied with promoting certain favorite corporate clients, who are, in turn, generous campaign contributors.
I see the owner of Charlie O's as an entrepreneur. He believes that entrepreneurship and capitalism are one and the same. And he is probably right, if one looks to a classical definition of capitalism as creating a greater good for society by promoting a division of labor, where one person can concentrate on what he or she does best, thereby accumulating profits which can be used to obtain from others what THEY do best. On one hand, pizza. On the other, shelter and heat and the leisure time to pursue a lifelong love of automobiles.
My point is that what we USED to think of as capitalism has been subsumed, transmogrified and re-invented as corporatism. I think corporatism is every bit as pernicious as communism in economic terms. But those who hold the reins of power define the rules of the game and the definitions that go with them.
I think in most people's minds these days, capitalism is seen as being more Gordon Gekko - Greed Is Good - and less Ayn Rand.
Anyway, an interesting discussion. Nice to get some input from around the globe from other members besides Ultra, OP and me!