There's only one copper infrastructure which is owned by Telia, the previously state-owned phone monopoly. If you want more copper lines to your home, you have

There's only one copper infrastructure which is owned by Telia, the previously state-owned phone monopoly. If you want more copper lines to your home, you have to get it through them. However, the phone and DSL provider market is deregulated such that Telia has to allow other companies to install DSL equipment in the phone stations as well as use the copper cables. Fiber networks I know almost nothing about. I know there are several country-wide fiber networks, all the phone companies of course have their own infrastructure there, but there are a few more companies renting out access. I think you can become a DSL provider without actually owning any equipment, just renting access at the appropriate places, but then you are of course dependant on the actual infrastructure owners, and you will probably not be able to deliver the cheapest service, but have to compete on something else.