I guess that would explain(sort of) the net worth of the TOS actors.
William Shatner, $100 million
Leonard Nimoy, $45 million
DeForest Kelley, $5 million
James Doohan, $7 million
Nichelle Nichols, $8 million
George Takei, $12 million
Walter Koenig, $8 million
Majel Barrett, $60 million-plus(being married to Gene Roddenberry)