Although the internet has come into people's lives pretty much devoid of precedence in terms of rules and regulations, it should be recognized that if a service is to generate revenue from a given country, the laws of that country must be adhered to. So far, this has never been done and the internet companies making money out of this unfettered access are doing it with the knowledge that they need to voluntarily put up the necessary resources to ensure laws of countries they have access to are adhered to.
A sizable portion of their profits are money that rightly should be spent on filtering their content and making them suitable for each country's consumption. It should be understood that freedom of expression/speech and rights of access differ from country to country. In one country, freedom of speech may include any thing from the filthiest to the responsible, whilst in another you have freedom of responsible, accountable speech. In one country, a person's rights may include the right not to respect anyone, whilst in another you have the right to responsible behavior from others. Thus, using the lame excuse that the internet should be kept free from any form of regulations is just an excuse to not be accountable for one's actions and to conveniently free oneself from having to moderate the service content to be in line with a country's established laws. And that, coincidentally, works wonders for the bottom line.