Fitbit didn't kill Pebble, Pebble filed for Insolvency. Fitbit bought the IP and hired some of the employees. Fitbit refunded Kickstarter contributors, kept the official servers up for more than a year, and, by all accounts, worked with rebble to make it possible for them to take over the ecosystem. None of that would have happened without Fitbit.

I'm bitter about how things ended too, and I was wrongly optimistic that Fitbit might take up the flag of an enthusiast smartwatch. However, I can also acknowledge without Fitbit's involvement, the situation would be much worse!