Actually I don't need to own the scaffolding material yet and yes labor is very important here in Finland and you get the work with your reputation (I have a lot of work).
If you think to buy scaffolding material when starting it's very stupid thing to do if you don't have your own projects for full time.

When I rent workers for the contractors it's less profits but less risks when don't have the money to purchase scaffolding material (need at least 2500m2). In the future I will buy material when having the money to put in these without loans.

Example:

The factory stops for 1 month and there is a plenty of work 12-16h/day this means about 2000€ profit/worker.

But everyone who has workers knows how this goes.