It's the same in the bicycle trade too. I work for an importer/distributor and products that are usually about a 3 month lead time are being quoted at 9/10 months now. One of our popular bikes that now retails between £5500 and £8500 is totally sold out until next August. And we ordered 30% more than we sold last year... madness! We did 8 months worth of business in a 3 week period earlier this year. The warehouse is the size of 8 football pitches and it was almost empty at one point.
With everyone being stuck at home for the summer musical instruments, home recording gear, home office equipment and bikes went mad. Limited factory capacity due to shutdowns and more recent problems getting things shipped gives you the perfect storm.