Capitalism is Luddite at a fundamental level - if their isn't competition, there is absolutely no reason to innovative, change, or maintain a quality level - so, in a capitalist economy all participants are always incentivised to grow as large as possible, above all other things, bc at some point, they really will become "too big to fail" - whether in a small monopolized niche or a massive but dominated industry, that is always true, without fail as profits are always most important.
It works with everything in a capitalist system too - all production, resources, and outputs of a society that allows unchecked greed, will grow until it stops due to market consolidation (not always nefarious either). Google search as an example, we all picked it first, then they got greedy - even if they were saints that always was going to play out like that, bc of capitalism.
Once a market is controlled by a few players - ALL TRUE GROWTH STOPS and bare minimum, most cost effective to profit ratio "limited/controlled/planned" growth follows.
Hard drives for my adult life are my singular example. Lots of tech is like that actually.
Capitalism without competition will naturally evolve into full on Feudalism and Serfdom if it is allowed to.