Если не можешь победить, купи!
If you can't beat them, buy them!
https://en.wiktionary.org/wiki/if_you_can%27t_beat_them,_join_them
https://www.quora.com/Whats-an-alternative-to-the-saying-If-you-cant-beat-them-join-them
https://www.lingvolive.com/ru-ru/community/posts/416870
If you can't win, buy!
If you can't win THEM/IT, buy THEM/IT! ¿