My employer struggles to find skilled people and when one guy on my team suddenly disappeared for 6 months it was definitely felt.
Before that I hadn't really grasped the idea yet. Even though I've lived in Sweden since I was a child. I just couldn't accept that you can duck out of your job for several months and then come back as if nothing happened.
I saw it as a sort of betrayal of your co-workers and duties.
And when your employer is already struggling, quietly, to find competent personnel, it really felt like a kick in the gut to lose one of the most competent resources in that team.
Of course that person came back and has always performed at a decent level.
Now I'm older and more mature, I have my own company, so I'm much more accepting of the privilege to take a break from my employer to develop my own business.
Unfortunately, and the article states this, there is an issue being in direct competition with your employer. Mine is a consultancy firm which means they do almost anything. They can purchase a solution from someone and re-sell it as their own. So it's very hard for me to start an IT business that does not compete with them.
It's a sword of damocles dangling over me right now, because I haven't revealed to my manager what I'm doing in my own free time yet. All I know for sure is that I haven't signed any contract preventing me from running my own business and there is a clause in the collective bargaining contract that states that I can't use any company resources, which is obvious.