It is silly to start pointing fingers like that, as it shows a lack of accountability, but in these companies’ defense, why does the software world get a leeway

It is silly to start pointing fingers like that, as it shows a lack of accountability, but in these companies’ defense, why does the software world get a leeway? If you publish a serious exploit before communicating with the maker to fix it, it will get you in legal trouble, even though fixing software bugs is far easier than cars that are already out of the factory.