It was never meant to be the "New Ethereum" but instead it was created to be an alternative for those who gets overburdened with ETH ridiculous fee and in july ETH probably gonna solve the problem regarding fee already.
As of now, I always see BSC as different entity compared to Ethereum seeing the nature of defi and dapps there which is quite different in my opinion compared to ETH and with BSC you won't have the leisure of running as much nodes as you want.
In crypto land, money talks. It's all a matter of staying ahead of the game in order to avoid losing mass adoption in the mainstream world. If Ethereum is unable to scale in time, other alternatives might be able to take its place in the future. Binance Smart Chain is the one closest to Ethereum in terms of market cap, increasing the odds of a "flippening" in the near future. Most projects have done the switch from ETH to BSC because of the high fees and slow transaction processing times. Binance has done well in marketing/promoting its own blockchain network, bringing demand to BNB at a fast pace. It's no wonder why Binance Coin sits at around $500 per coin. The longer it takes for Ethereum to solve scalability issues, the better it'll be for Binance Smart Chain and other rivals on the market. People are getting tired of subsequent network upgrade delays within the Ethereum blockchain, as they hunt for other smart contract platforms on the market. If the pace keeps up, BNB might become the "New ETH" in the not-so-distant future.
Nonetheless, no one knows what will happen in the future. As I've said many times, crypto behaves in strange and bizarre ways. Despite Ethereum's high fees and slow transaction processing times, it's still the #1 platform for "De-Fi". The majority of developers, companies, and startups support Ethereum right now, so I don't see Binance Smart Chain replacing it anytime soon. That could change if ETH continues to delay network upgrades. But with EIP-1559 and ETH 2.0 in sight, Ethereum will become stronger than ever before. One thing for sure is that Binance Smart Chain's level of mainstream adoption is low compared to Ethereum. As long as this is the case, Ethereum won't be going anywhere. Just my opinion