Forecasting is more difficult in the Alps than in other regions. Sölden doesn't benefit so much if the ‘bad weather’ comes from the north/west or west. For more snow in Sölden, you need a weather situation that comes from the south. In Europe, cloudy weather tends to come from the west. So it is quite normal that there is little snow in the valley in Sölden.
And snowfall is nature and nature doesn't need plans and doesn't care about plans.