Ho Chi Minh was always a Communist and a Comintern agent. There was no way he wasn’t going to support the Soviets.
It’s possible that allying with Moscow was inevitable, but things didn’t start out that way. Not all communists are natural allies: Vietnam and China are historic enemies and he wasn’t close to Moscow when our OSS guys were alongside him in 1945. But like I said, it would just be interesting to see how things would have turned out if we told the French we weren’t going to spend money and lives so they could keep their colony. Southeast Asia might look entirely different today had we supported Vietnamese nationalism and they wouldn’t have felt the need to turn to the Soviets with us as an ally. Who knows how leaving France high and dry would turn out, but they haven’t mattered much in the last 100 years anyways.