The savings ended up with spending on things like iris isn't it?
It does not need to be directly passed to lower fares always.
If we had small hold bus operators like those running the cross
border svs, would they be able to secure diesel purchase at say
$1.10 per lit?
Somemore who was e one tat bought in farecards n double decks? It
was in e monopoly era 
I thought you were talking about economies of scale, fuel and
bus acquisition just now.
Now it's sidetrack to Iris. 
What's the benefit of Iris to consumer? It only helps optimize
their operations so that they could profit more from the system.

If it's about bulk fuel purchases, the bus operators could
always set up an association to purchase fuel in bulk and
distribute amongst the smaller operators. There are always
work arounds, there are many solutions to the problems,
it's not a mutually exclusive solution. 
"When you split up, there's no
more econs of scale esp over fuel and bus
purchases.
I think the worst would end up
being say spending $$ on farecards, who's going to spend back in
1980s if it wasn't a monopoly and govt back then had other things
to focus on."