It started with them being the front runner in stone grinded skiis in the early 90's.
Coaches and training environments, yes. We have probably the best training environment on the national level, and for sure on the youth level, as there are so many youths competing compared to Sweden.
Another big thing is that of 16 000 largest sponsor objects, the Ski Federation is the number one sponsored object. Hence, that's why they can found such solid program. Also funds from the national betting company program, which give back billions to sport every year. Of which the ski federation also get their share.
There is no thing as asthma doping. There is asthma medicine through spray. Even the winner in the 50k Niskanen use it. Finland and Sweden is just complaining on the method, even though the amount of spray inhaled is just the same as their use and just as their use, give athletes with asthma the chance to compete on equal levels.
Healthy athletes gain nothing by using asthma spray.
The only way one could gain anything, is if one ate the asthma medicine in food form. Which isn't being done. That is international research, so just leave it.