I agree with everything Don-wys said - and I said before that weighing the pros and cons, most of us would likely choose to opt-in. I offered reasons why some might decide not to - that's all - I would hope everyone here sees some value in hearing both sides.
There are costs (and I would argue that the more opt-ins the higher those costs) and it might surprise you that some shareholders who have lost a lot of money they could not afford may feel that they don't need to give up any more - especially when there are enough opt-ins that they don't need to. Yes they are taking a free ride on the back of opt-ins - others ahve said similar things here.