[philipwhiuk]

That's true but not because the objects are massive. It's because they fly very fast and there's limited traffic management.

We risk solving the wrong problem due to bad visualisations of the situation.

[schiffern]

It's actually mostly because we allow objects to fly too high. Small height differences have a huge difference in orbital lifetime (and therefore risk).

https://commons.wikimedia.org/wiki/File:Orbital_Debris_Lifet...