I said $2,000+ to encompass even more expensive machines/setups.

I never said bodyweight or a kettlebell set could provide exercises for every possible movement or strength vector.

I said that the vast majority of people don't need anything more than those to build a healthy level of fitness. And given that the average cost of a gym membership in the US is around $50 per month, after a few months, their used kettle bells or simple dumbell set has already paid for itself.

And weights last basically forever unless they are severely damaged, so zero maintenance cost.

Nothing wrong with going more hardcore if that's your thing, but that's not at all necessary to build a solid base of strength and general fitness.