When a corporation makes a tool, it's to do some job it needs to do. Usually features are added over time to provide for the requirements of its users and various teams. In this way, it only does what it needs to do, and is usually kept around a long time, used by everyone, and rarely replaced, because it can always be modified to fit a new feature. It ends up being pretty feature-complete and useful (which is sad because they usually end up locked up as intellectual property).

Non-corporate tools, on the other hand, are typically made by people who need to do something and want to do it their own way. It's not that they couldn't make due with an existing tool - the functionality probably existed in another tool or tools - they just want to do it differently, with some kind of interesting twist. The end result? Reinventing the wheel with maybe one new feature, and missing all the ones they didn't need/want. Do this a hundred times and you have a hundred tools that are useful to some people, but not most people.

I'm not saying it's lame, i'm saying it's a waste of engineering effort.