It's like that because everyone involved just Ignored the fact that, during the 2000 election, the CEO of Diebold was the State Chairman of the GW Bush Campaign and Declared Publicly and On the record that he would "Deliver Ohio" to Bush.
AT a time when His Company was in charge of the "Care & Feeding" of all the Voting Computers in the state.
AS far as "Hackability" was concerned, blackboxvoting.org at the time was able to demonstrate at least 5 Different ways to rig or alter the results using those machines.
The Simplest one was the Memory Cards used to hold the vote totals.
Wehn the Election first starts, the supervisor is supposed to run a "Zero Test" on the card to "Prove" that it is "Empty". It checks and all the Vote Totals are reported to be ZERO.
What they discovered was that, if you entered 50 Votes for Candidate A and Minus 50 Votes for Candidate B on those memory cards, they would Pass the "Zero Test" because the Total Votes on the card added up to Zero.
The only possible exposure would be a candidate who lost so badly that there would have been no Need to rig the votes in the first place.
And, in subsequent elections in a few very small races, candidates DID "Lose" with Negative Vote totals after the elections.
Voting officials brushed it off as "Computer Glitches".