You can agree with me that the concept of decentralized finance may not have been possible today because bitcoin paved the way for the development of decentralized finance (DeFi), which allows people to access financial service without relying on traditional banks. I also think if Bitcoin hadn't been created, it's possible that the development of blockchain technology would have been slower and traditional financial systems like commercial banks, brokerage firms, loan associations etc would continue dominating the economy.
Blockchain and bitcoin was created together, it would have been created together again, they go hand in hand and not differently so when bitcoin was invented, so did blockchain.
To be precise about the history of bitcoin, there were some previous attempts back in the day and most of them failed because they were not backed by something as solid as blockchain, so when Satoshi Nakamoto finally figured out the trustless system of blockchain where everyone was equal and nobody controlled anything, it became a lot better and bitcoin became famous because of this and none of the previous ones ever reached that level. I hope that it will get bigger, but it is already at a legendary level to me.