That 2nd point is bollocks. Actually, they all are. And you know it. SAMP servers were coded by everyone who could, therefore, if there was an idea there, it could be done. IV online is limited to what the developers put out there.
I am also very sure that the staff of SAMP would ot have damged your servers intentionally. Neither am i sure GTAIV 'won'... SAMP brought in SA sales, undoubtedly, and, that's more revenue to R*.... it's win / win for all involved.
I am also quites ure they weren't hacked. 'We give up' is not 'We got hacked' Also, who's to say, that in time, IV online won't be hacked.