The meaning of the example is that in the old times, Bitcoin was necessary for the industry but for now the industry is independent or maybe some want a better option but in my view, the survival of the crypto Industry without Bitcoin is not possible because Bitcoin is a very huge system and the miner and users make a strong base for the cryptocurrency security and stability. This is just one and I know more factors also show that without Bitcoin crypto industry does not survive.
The majority of investors entered the cryptocurrency market through bitcoin investments, having learned about its safety and then become aware of other cryptocurrencies. Which cryptocurrency will endure if bitcoin vanishes today? No, of course, as no one will see them. They lack the security of bitcoin. Individuals won't invest in those currencies since the danger involved is greater than with bitcoin. Nevertheless, the cost of those coins is determined by the cost of bitcoin. When the price of bitcoin increases, its value increases as well because investors know that at that point, more people will be looking at them and buying them in anticipation of a possible bull run.
Indeed there's no strong basis yet of why Bitcoin is the top crypto in this industry and how it became the 'leader' aside from being believed one as the first ever for this blockchain.
It’s simple and obvious why bitcoin is the leader of all cryptocurrencies. The reason behind this is that since the existence of bitcoin, no one has complained that they invested, didn't get their money back, or that the coin has stopped functioning at all. You know, there was a cryptocurrency that did that right, and again, the risk behind bitcoin investment is very small when compared to one of the altcoins. However, peace of mind is also very important. Nobody has invested in bitcoin and started fearing that maybe the coin will crash or they will run with the funds. Bitcoin is there at any time, and as long as you can take the risk, you will make a profit from it. It is just a matter of time.