It would mean more risk, for example say I trade cable my spread is around 1 pip, on Apple its around 15 so it would not matter if i changed my strategy I still would have more risk.
Well, in forex it will be pips but in equities it will be cents plus the volume you trade may be different. Risk equals lack of knowledge and not bigger spreads.
In the UK we have different ways to trade, the way I trade is tax free known as a spread bet. A spread bet is the same no matter what product is actually traded, this way any movement of a price is the same.
The broker can either act as a market maker or they could hedge the position, so the trade is essentially a bet against the broker.
So to sum it up I could add 1 movement or 15 to my set risk, its more logical to trade the lower spread in this case, if i were to trade stocks i would be better changing the way I trade.