the internet is interconnected...yes..
..but ISP's are not centralised under one company, which are all using one DNS
its funny how you start your idea by literally using a plural to describe ISP's and not a singular context.
just because computers are networked together does not make them a single entity controlled by a single point of failure/entity.
the internet has different ISP's in different countries with different policies. if it was all centralised, wouldnt you think russia would have taken out the US 'subsidiary' of your imaginary conglomerate by now
With your argument banks are not centralised either, because there are many banks all over the world.
I know ISP's are not one entity. But they are all centralised in the way that each of them facilitate access for more than one singular user each. I believe that all countries have a cooperation between ISP's and governments, which have the potentiality of ISP's being used as tools by tyrannical leaders to silence opposition. That is the type of centralisation that is definitely not beneficial for humanity.
yes you have just said what i said about mutually agreed communication. but failed to realise that each country has more then one ISP. and each ISP has its own policies.
EG a russian ISP has different policies than a US ISP
russian government cant tell a russian ISP to "take down" a US ISP or the US government access to the internet. if they could, they would.
what you have to realise with each IP access/webpage visit, there is a handshake protocol. where parties agree on the communication method. yes in most cases they all agree on the same language format of data, but thats not centralisation. thats communication. consent/agreement at each interaction.
being centralised is a single point of control/failure. where everything has to go through one single point. and one entity has full control or can collapse it all. but thats not how the internet works
i know you are trying to imagine the internet as a polygomists house. where all the women in the house is married together with one man and where the man of the house then 'owns' all his wives to do as he pleases by his naive thought that being married means control.
but thats not how marriage works.
just because they speak the same language and have a mutual agreement. does not mean the man can rape his wife anytime he wants. he needs their consent with each interaction/event. women have a mind of their own, their own independance and their own choice to just say no. or more often "not tonight i have a headache".
just because there is a russian polygomist in one house on a street does not mean he controls the whole street of woman. yes he can TRY to lock his wives up to not be able to talk to neighbours. but he cant lock all the houses up to stop other families from talking to each other. and sooner or later even his own wives will find a way to get out and talk to the neighbours.
yes russia can get its russian ISP to shut down. but this only affects russian customers. not the internet. russian customers can then just use satalite or cellular to access other international internet access servers.
when you learn about handshaking and data formats and protocols you start to see the internet is about consent, not control.
no government can just say 'tomorrow the internet shall only speak in digital russian'.. all countries, all isps and all servers have to agree to a protocol for it to then happen. and that does not happen very easily if at all. russia cannot just change/stop the internet.