Most convictions aren’t via trial but via plea bargains. It’s fair to assume that innocent people are less likely to take a plea bargain than guilty people, so the chances of getting falsely convicted could be quite high for an innocent person going to trial.
The innocent person has a 75% change of being convicted. A plea deal of the innocent isn't counted if it avoids jail time.
Better to deal with the cost and hassle of parole than being prisoner where you are legally on the same level as a slave.