Playmobil may say they're not a competitor, but if I buy a set from Playmobil I'm not buying it from a retailer, so from a customer's viewpoint that's still competition...
My biggest problem is that I have no local shops selling Playmobil. There's one TK Maxx store that occasionally has sets in, but not reliably and nothing like a full range - more like the bits nobody else could sell. ARGOS don't carry Playmobil at all, but do carry a limited Lego range. My town is woefully supplied for Toyshops generally, and I'm glad I'm not a kid anymore.
To buy Playmobil from a retailer, I have to travel at least 5 miles by bike, or ten by bus, and then lug it all home again. I've done that a few times, and will again, but if I'm in no hurry for a set, Playmobil's website works for me, and if I order enough I don't even pay postage.
Lego is comparatively easily available, as it is stocked in ARGOS, though only a limited range. If I buy from Lego's website I still pay postage, and prices are the same as elsewhere if not more expensive for some sets, so if I can get it elsewhere I will.