Because they thought Hillary would win.
They had planned their war for when she was in office.
They wanted it to look like Russia stole the data,
As part of a pretext to go to war.
Like blaming them for the DNC hack( when it was more than likely Seth Rich)
Which is why they did not give the DNC servers to the FBI.
And why they created Guccifer 2, after they found out that Rich had stole the data, and before wikileaks published it, they created guccifer 2 as an excuse/or as something to blame for the alledged hack of the DNC servers.
And why they used a russia narrative when crafting the insurance policy in case Trump won.
So it would be RUSSIA RUSSIA RUSSIA on multiple fronts.