When the MTA came calling, people answered.
Only absolute idiots dared to defy the might Mech Trade Association. The trans-galactic organization's stranglehold on the mech industry, it's absolute military might and the Big Two's monopoly on life-prolonging serum all ensured that no one rejected the mechers when they issued their requests.
Fortunately, the Association rarely approached individuals on its own accord. The main reason was that it was already vast and powerful enough to solve its own problems.
Ever since the Age of Mechs kicked off, the Mech Trade Association had become the dominant father of human civilization. Its vast influence blanketed almost every part of human space and no one could completely divest themselves from this distant but extremely overbearing parent.