@Sherry -
Well, I believe it does. But I don’t have a vested interest in the outcome of the argument. I was just expressing my opinion, which I still hold.

Expressing your opinion is all well and good, but you're not really explaining why you believe Thesis and BackupBuddy are related in this circumstance.

Similarities:

1) They're both PHP code
2) They're both WordPress extensions
3) Both must be purchased for use

Differences:

1) BackupBuddy is and was always GPL. Thesis was formerly all-rights-reserved, but recently became split-GPL.

Why none of it matters:

1) PHP is run-time compiled code. Thus, having possession of a PHP application or code is equivalent to having the source for that code. The code is the source.

2) The issue regarding purchase cost is completely irrelevant. The GPL explicitly allows it. The Thesis debate never had anything to do with purchase cost, and the question of availability of BackupBuddy plugin source code likewise has absolutely nothing to do with its purchase cost.