Sometimes it's just fine though. It probably depends on the up-front cost, and what value you derive from it. If Spotify stops working tomorrow, I can stop paying them, and we can all go home friends. I wouldn't consider my subscription fees over the past couple of years "lost".
On the other hand, if I had to buy a $1000 device for the privilege of paying them $10/month, my anger level would probably depend on how many years I got utility out of that $1000 device before they shut down.
