How high can Ethereum realistically go?

Good day, esteemed crypto expert. I've been following Ethereum's performance with keen interest, and its growth has been nothing short of astonishing. However, I find myself wondering about its ceiling. Given the volatile nature of the crypto market and the increasing competition from other blockchains, how high can Ethereum realistically go in the long run? Are there any factors that could potentially limit its upward trajectory? I'm not looking for a crystal ball prediction, but rather a well-reasoned analysis based on current trends and potential obstacles. Your insights would be greatly appreciated.