Just another case of the poor old punter running a bad last again.
I think they probably skim off a percentage that still makes the divvie reasonable and put the rest towards promos etc, a la the LOTTO boys.
Or more likely propping up their mistakes on the fixed odds markets perhaps.

There could also be something to the suggestion that they give bonuses to LARGE punters.

As i say, a million ways to get beat.
Voting with our feet may be the only option left.

Scandalous really.