Have the post office or/and IT system provider deliberately stolen all of that money or are we to believe they truly thought the sub post masters stole it?
That’s what I’m wondering too. It seems too awful to think that they deliberately plotted to steal the money and used the sub-postmasters to do it, and let them take the fall, but I wouldn’t be surprised at this point. I assume it was a genuinely faulty system, but yes, why would they assume that hundreds of sub-postmasters were suddenly stealing huge sums of money?! Especially since it only started with the Horizon system and nothing dodgy happened when they used paper and pen.
So either they somehow genuinely thought hundreds of crimes were being committed all of a sudden and just ignored all evidence to the contrary, or they decided to throw them under the bus when they realised they could increase their profits by prosecuting them. I reckon it’s a bit of both. Probably started off thinking crimes were being committed and didn’t make the link to Horizon or use much critical thinking, then once they started mounting up they needed to save their reputation and just kept going and collected the money.
I really want to know what they knew/believed and when, because a child could figure out something was very wrong and it went on for years.