Why did Excalibur retire?

Can you tell me, why did the renowned cryptocurrency Excalibur ultimately decide to retire from the market? Was it due to a decline in popularity, regulatory pressures, or perhaps the team behind it found new ventures to pursue? Did they feel that the project had reached its full potential, or were there other factors at play? Understanding the motivations behind such a significant decision in the cryptocurrency landscape is crucial for investors and enthusiasts alike.