If anything, it will be a drain on society. This drain will be realised via more pressure on our creaking force of Gardai having to carry out the function of enforcing Court Orders related to civil matters. This will also make it more difficult for Banks to realise their security, thus increasing all of our mortgage rates. The average time for a bank to recover its security is years at this point. Having the Gardai carry out enforcement of Possession orders will only extend that timeframe so there is more risk, so interest rates will increase.
I think it is worth emphasising this here, that these consequences will come about because a serial defaulter, who defaulted on loans given by financial institutions and who refused to pay local suppliers several times in the past, who simply refuses to pay this debt to this Bank and then chose to recruit a mob to protect his home, in spite of the High Court through several judgments ruling that he took out the loan and must pay it back or lose what he put up as security.
This will not be the case.
The gardai having to carry out the enforcement of court orders to protect society and the state, will have none of the effects that you claim.
Having private companies/mercenaries doing it on the other hand will absolutely be a drain on the gardai, as the gardai will have to dedicate massive resources to protect the mercenaries.
Mortgage interest rates will go up regardless unfortunately, they would never have come down, regardless of how easy the banks would be able to realise their security. + the length of time and the hardness of the banks being able to realise such security, is the banks punishment for almost bankrupting the state.
To be clear, i'm not bothered about the individual at the centre of this case, he has reaped what he has sewn and must face the consequences.
However the people had to send a message that private companies acting the thug will not be tolerated.