What is it called when a person makes a bunch of money as a result of inheritance? Is that good ol’ earning it the hard way capitalism that anybody can do if they just put their mind to it?

I’ve always dreamed of a life of getting rich by fixing lawnmowers.
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“You never change things by fighting the existing reality.
To change something, build a new model that makes the old model obsolete.”
– R. Buckminster Fuller