"Idea without execution is worth nothing" <- that doesn't mean that ideas have no value.
In the same way, you could say that a computer is worthless, because a computer without electricity is worth nothing.
You need to connect the idea with execution for it to have value, but the idea has value, because if you connect it with execution, then it has some value.
In the same way, computer without electricity has value, and you can't buy it on Amazon for free, because if you connect computer to electricity, then it becomes valuable.
"Idea without execution is worth nothing" <- that doesn't mean that ideas have no value.
In the same way, you could say that a computer is worthless, because a computer without electricity is worth nothing.
You need to connect the idea with execution for it to have value, but the idea has value, because if you connect it with execution, then it has some value.
In the same way, computer without electricity has value, and you can't buy it on Amazon for free, because if you connect computer to electricity, then it becomes valuable.
So, yes, in my opinion, ideas have value.