You lost me there in an otherwise fine comment. The reason is at least as much that the big bully in the schoolyard wants you to buy his product and most don't dare not to. In many countries that did buy it there have been complaints from the other bidders on the contract that the contact was made specifically so no one else could win so they couldn't even bid properly (and lots of evidence says they are absolutely correct in stating this). This doesn't happen if the product was as good as you claim. Then it would have just won fairly. Personally I haven't heard of a single fair win but I don't follow it that close.