[capableweb]

> Personally speaking, open sourcing something with no intention of responding to interested developers doesn't feel right.

Everyone is different :)

> When you open source though, aren't you making it significantly easier for people to build a product better than yours?

If the only benefit from you and a competitor is a particular feature or something else that you gain from proprietary code, you're gonna lose eventually anyway. You need something stronger if you are to survive. There needs to be something more between you and your competitors than something that can be easily copied (like most features in most products).

Some companies focuses on integrations/synergy (like Apple, easier the more stuff from them you have) while others on other things.