[drgn]

I think it's like this ...

Only Sim can play tye role he did ...though the other Co founders were good engineers, they could not fill the gap if Sim was not there.

It's like Apple....obviously Steve Jobs was not the only founder but he is key and successful Apple is associated with him.

this explain why creative cannot come out with good product after the departure of the 2 founders.  started to go downhill in 90s.