Tell my economics textbook not me. Free markets are defined, in part, by the absence of coercive impediments to economic activity, which explicitley includes restrictions on entry.
"Low" is relative. But we've got people creating new models with millions of dollars, not billions. Granted, not thousands either. It's low enough that I don't think the barrier to entry is a problem.
Grimblewald|18 days ago
see "low barriers for entry"
https://en.wikipedia.org/wiki/Free_market
jtbayly|18 days ago