Your point would have validity when such people sign a letter or whatever backing the call to leave. I think,in the case of 'big business' a lot of them are staying out of it.
They count for nothing now the process is in full swing. The path now is predictable.
Expect a swing towards 'Out'. Fueled by endless negative headlines from the Murdoch press and the Daily Express. Big business may scare a number back towards the 'In' camp with tales of economic ruin.
I'd...