Since Python and C++ were not successful due to promotion by Google (but for other reasons), you do not have a logically deductive counter-argument here.
Your counterexamples speak nothing to the validity of the proposition "if Google promotes something, it will likely be successful".
They are counterexamples to the ridiculous proposition "If, and only if, Google promotes something, it will be successful".
Your counterexamples speak nothing to the validity of the proposition "if Google promotes something, it will likely be successful".
They are counterexamples to the ridiculous proposition "If, and only if, Google promotes something, it will be successful".