Earlier quoted context omitted.
> They’ve built their entire business on the back of open source software that wasn’t ever encumbered with the sort of nonsense they’ve attached to their own projects. So did Amazon apparently and others. At least Google have open sourced many interesting and useful projects so they have given back. Microsoft have been open sourcing things lately too. Others so so.
The problem is that a critical protection against large companies is via patents or at least the threat of. Without them, the ability to dethrone them becomes very limited.
I'm having a hard time coming up with any examples; the lawsuits that come to mind are patent trolls, where the "little" company is a non-practicing entity so they can't be counter-sued for violating the giant's portfolio of patents. But, you sound pretty certain, so I want to figure out where I'm wrong.