Also, the Mars Sample Return turned out to be too expensive, because NASA began to cut its budget, which even led to the resignation of 530 employees of the  Jet Propulsion Laboratory (JPL).

Although NASA tried to keep the mission from completely failing. To save the Mars Sample Return, the space agency has made a public request to private space companies that could come up with a cheaper solution to return samples collected by the Perseverance rover. The importance of delivering the collected material from Mars is that the samples contain the answer to the scientific question: was there life on the Red Planet before? And this question can only be answered on Earth with modern laboratory equipment, because Perseverance and Curiosity simply cannot do such a detailed analysis.