Yes we would. Long before capitalism was invented the great creators of the world made great strides with inventiveness. While necessity is certainly the mother of invention, there's no limit to human curiosity.

Examples: Arabic numerals, Da Vinci, Mozart, Galileo, Maxwell, Einstein, Turing, etc. That's where a lot of those modern things come from.

Then along comes the capitalists to exploit the true discoveries for personal gain. Mass produce this-and-that, destroy the environment, etc. Build atomic bombs.

I'm curious about when you believe capitalism was "invented". Post-Einstein?