V on n
II.16 The 'gamble' group
These verbs are concerned with gambling.
A greyhound trainer has won £200,000 from the bookies by betting on his own dog.
The preposition on is sometimes followed by a wh-clause.
Interest rates might go up again, so people are sort of gambling on what's going to happen in the next five or ten years from now.
In the case of gamble, the preposition on is sometimes followed by an '-ing' clause.
They gambled on getting stronger western backing and, this time, they won.
In the case of bet and gamble, the preposition on is sometimes followed by a noun group and an '-ing' clause. This pattern is V on n -ing.
bet gamble speculate wager
Some day the company may pay for the failure to diversify, but do not bet on it happening soon.