I don't think,
at all that Amazon, Facebook, Google, Tesla, SpaceX, Microsoft, Apple, Netflix, +++ could have happened in Scandinavia. Even our small success stories are sold to foreign investors before they have time to grow big.
It's harder to determine the cause, though. Contrary to popular opinion, I believe that work ethic, level of dedication, drive and regulatory climate wrt. employee protections, consumer protections etc. has something to do with it.
But this is just a small part of the question. We also don't have solid access to investors and capital, a business/startup-friendly tax & regulatory climate, a home market of 300 million customers, a culturally compatible potential employee pool of 300 million, many of the world's greatest universities, thousands of successful entrepeneurs who participate in the business climate, entrepeneurial success as a prominent cultural trait, excelling in your chosen profession as something to be lauded, bureaucratic & legal support for companies that are about to become successful, a relatively judgement-free climate with regards to high compensation for successful professionals etc etc etc.
It's hard to say if the value of not having business/professional success, or even long hours as a primary cultural value is key when compared to these other elements.
I'm pretty confident that e.g. "The Law of Jante" easily trumps the lack of a 50-hour workweek as an impediment to success, but there are probably also downsides to not even having the latter as an option if it feels necessary.