I don't really understand what you mean by supplier.
Are you talking about business?
An internet service provider is a business. So at least ZUS - 1000 PLN
The supplier has certain obligations: he has to collect the logs for the police and keep them for a year or two. Submitting some reports to various institutions. A heap of costs.
If you mean logical operation, the inter-net, as the name suggests, is a connection of various computer networks. Each operator has its own network, some customer computers at the end. Small, medium or large. These networks meet in a relatively small number of places, the so-called interoperator traffic exchange points.
Not all operators do this because it is expensive. You need to physically have a cable or link running to such a traffic exchange point. And that's expensive. Small businesses, get hooked
under someone else's network.
Having access to the Internet means using the services of companies that have a link to such a traffic exchange point. Or get such a link yourself. You almost certainly won't be able to do it without having a business. Theoretically, you could lease cables, optical fibers from some companies and have a direct connection to the traffic exchange point. But it also involves having a range of addresses and a few other things. But without going into details, these are costs going into thousands of PLN per month, depending on how far you are physically from such a point.
Smaller, local providers do not have direct access to the operator traffic exchange point. They "enter" the Internet through some access points of large operators, i.e. they get access to their backbone network. fast. They use their addressing and their link to the traffic exchange point. Under different conditions. You can't buy such access without a company. But he can make it. These are the most symmetrical links. Depending on the existing infrastructure and the number of mbits, you currently pay a few to several PLN per 1mbit.
I live in a village near Warsaw, no internet at all. I asked the big operators. No problem. He pays from PLN 1000 to PLN 2000 per month and gets a connection in the range of 20/20mbit to 100/100 connection. The price depends on whether you need to dig 2km of optical fiber along the radio line or ears. You'll admit that it's a bit slow for home. But then it is a link from my home to their backbone network, which is already "close" to the interconnection point. Sometimes companies do this when they need fast, stable, uncompromising and symmetrical access.
A small, medium-sized operator will buy such 100/100mbit and 20mbit from 50 subscriber lines from before. Because it's never the case that everyone is on the Internet at once. If you don't overdo it with the number of customers, it will work fine. This is how the small operator earns great money.
