> Now they try to reduce their labor costs by stretching the limits of the law
Why would you say they are stretching the limits of the law? My understanding is that they had no obligation to renew those 3-month contracts.
> Except if their goal was to become a monopoly and then charge whatever they want for deliveries.
Even if that's the case (highly probable), it would still be a huge improvement compared to the pre-efood era when lots of delivery riders would not be paid on time, work (illegally) with no insurance/pension, sometimes even get humiliated by terrible bosses.