In point of fact, Washington never quit growing tobacco, or quit distilling whiskey or several other entrepreneurial enterprises he was involved in. All throughout his Presidency, he continued owning his farming and distilling business.
Well, let's be candid. Washington, like all but one of the signers of the Declaration, owned slaves. I'm quite sure he never either picked cotton or mashed corn for his distillery, either before he stood for the Presidency or after.
Having said that, I do understand the point you're making.