The government was all in, very early on. There was this giant tax deduction scheme in 1998 where every employed person had this opportunity to buy a computer to get online at like half price, since all the taxes (income tax, employment tax) were waived. I used that scheme to buy an outrageous $5k PC at "half price". (Dual Pentium 333 Mhz, Dual Voodoo2 - those are the specs I remember.)
Telia, the former Swedish monopoly telephony company did a surprisingly good job at bringing ADSL to people, quite early.
In parallel, https://en.wikipedia.org/wiki/Bredbandsbolaget was started, with the goal of providing high bandwidth connections to people. Cisco invested very, very heavily into this company, as well as a bunch of american pension funds. When I moved into an apartment in a mid-sized city in 2000, it had a 10 Mbit/s ethernet socket. I heard they invested so heavily, putting $1M routers into the basements of like 20-30 apartment buildings. Maybe that's why we got upgraded without an extra charge to 100 Mbit/s just a few years later. (It's now 250 Mbit/s, and we're still just paying $7/apartment/month in our co-op.)
It pains me a little to do so, but I credit the late 1990s social democratic government for the foresight to create the market by basically flooding the country with tax-free PCs.
And, oh, yeah, there was a lot of proactive fibre-laying going on, very early. Not quite sure how what happened. That backstory is probably quite important...