The Scottish football governing body's views on gambling are stricter than those in England.
And Ross believes punishing players for putting money on games that are played in foreign countries makes no sense.
He was speaking after it emerged the SFA have charged Rangers player Ian Black with illicitly betting on 160 games over seven years.
The former St Mirren player said: "Should a player in Scotland's second division be banned from betting on a Champions League game?
"It's a good question and one that should be looked at.
"It comes from Fifa, who want to protect their big international tournaments like the World Cup. It is they who say they don't want any betting on football.
"But they don't take too much to do with how it is governed locally."
He added: "In England it is competition-specific, but the SFA have taken the decision to take a zero-tolerance approach to the whole issue of gambling on football. I suppose that begs the question about whether or not it should be enforceable or not and whether it is reasonable to deal with the issue in this way?"
Ross revealed that he and other PFA Scotland representatives have visited most of Scotland's 42 senior clubs to speak to players about gambling.
He explained: "We explain what the rules are and what options are available to them if they are having issues with gambling.
"As for players betting against their own side, it's not something that I have been made aware of."