This is a cultural effect. Once everybody knows that everybody else also knows that this is the way to go, any legislator that votes against it will be seen as corrupt or pro-fraud. Nobody wants to be like that. Even though at the time, we had three parties in the parliament, none of which had more than 50%. In fact, the Digital Signature Act amendment was fast-tracked without the usual one-month cooldown period because nobody wanted to be seen as obstructing the progress of fighting fraud.