Oh this is wrong on so many levels, really... first of all Opensim does not scale well. It's pretty much unlikely that with the current code base it would be possible to run a grid as large as SL on Opensim base.
Then Opensim has stuff, which SL has not and sounds good in theory, in reality it's just an utter mess. Like Hypergrid teleports, three or so different iterations around, and all of them have their own set of problems which lead to a big fragmentation of the Opensim space. Indeed something which SL has not, but fragmentation makes it painful to use and pretty useless.
And of course there's stuff SL has, which Opensim has not, like a good and quick physics engine. SL uses Havok, Opensim's physics engines are really low quality compared to that.
SL has pathfinding, which Opensim has not. And most of all Opensim is was too fragmented overall, and has not really a lot of people. So that's the most important thing SL has which Opensim has not: lots of people.
Nice try of derailing, but no one forgets about that. It's not about that LL tries to make money, which always is quite clear in that world. It's about that they are increasing fees in a type of manner and scale which is completely unparalleled before without providing any visible added value to the platform, so it just makes them look like the money grabbers which at the moment they are.