Agree with the revolutionary access to simple computers for hobbyists.

I haven't used them much myself but now that I am thinking more about automation at home I'm realizing there are much cheaper and safer (lower current) options for things I want to achieve as compared to electronic or electromechanical control systems I am familiar with from industrial settings.

I think Raspberry Pi played a big part in creating the environment where there was a market for all this other innovation.