Your question is quite interesting as to why the members switch campaigns, so according to my estimation, the answer is very clear for the sake of money. Obviously,  God has placed a natural substance in man that makes him automatically inclined towards everything better, and He is eager to get it. So in the same way, money is also an attractive thing that is used by people out of greed. So what I mean is that members also consider collecting more money to meet their needs. Human nature demands that he not do any work for no purpose; he must demand something in return.

As someone who is new on this forum, first he wants to know how to educate himself with the knowledge of cryptocurrency, but when he completes his knowledge and achieves rank, his earning starts due to joining Signature. But he is keen to join the best Signature, whose payroll is high.

So the summary of all this discussion is that the members switch the campaign so that they get more for their work.