Thinks like a payment service within the OVI store don't work (THE reason why a lot of developers are on the iPhone instead of being here - now they also getting the iPad to sell their apps - great!), then there is no user base for "maemo" at the moment (yes: freaks like us - willing to OC their devices), the whole transition process from "maemo" to "meego" - and still the big picture is not so, so clear (as it never has been with Nokia; wasn’t it Anssi Vanjoki claiming N-Gage to be so successful and developers can make money out of it, the same guy now claiming the death of DSLR and seeing the first HD phones in the up-coming 12 months – Mr. Vanjoki: did you already see the Sony Vivaz?)...
So yes: I can understand why a lot of people are not putting more of their (free) time into this...