>> You can build a product and sell it without business guy but you can't have a product without the tech guy.
I'd argue that you need both guys. But that both guys can be the same person. It's just uncommon that they are the same person. If you have both sets of skills, then you can do it alone.
A tech guy, with little to no business acumen will fail just as easily as a business guy with no technical acumen.
There's {set of things that need to happen for startup to be successful}, then {set of skills required to effect those outcomes}, and then {set of individuals who possess those skills}.
Whatever labels those individuals have isn't generalizable enough to form into "thou shalt"s.
And as the article put it
>> equal partners who trust and respect each other deeply
is probably the key.
Is everyone bringing valuable skills to the table (that others aren't) and does everyone respect and value what their co-founders / counterparts are doing?
I'd argue that you need both guys. But that both guys can be the same person. It's just uncommon that they are the same person. If you have both sets of skills, then you can do it alone.
A tech guy, with little to no business acumen will fail just as easily as a business guy with no technical acumen.