Of course they do. That's why Nokia has an app store. Applications are products.
If I need to sync with Outlook, I want a product that does that and does it reliably. I don't care if it's from Microsoft or Nokia or Joe the Developer. I don't care what it's written in. I don't care if it's open source, freeware, shareware, or commercial [with many unlimited plans running over $1000 per year, a few bucks for applications is minor]. I just want it to work.
Right now, today, if you want to make money off your product and Maemo and Symbian are your only choices you should ignore Maemo and focus on Symbian.