Robinhood isn’t a crypto-native project; it has the background of a traditional publicly listed company and a regulated brokerage. This time, they launched an Ethereum L2. First, they have their own app’s user base, and second, through products like tokenized stocks/DeFi/Memes, they’ve managed to make user numbers and trading volumes skyrocket in just over a week. 
Other traditional institutions, fintech companies, and even asset management firms seeing this will naturally think: 'If Robinhood can achieve results this quickly, what reason do we have not to follow suit?' Robinhood’s L2 is just the beginning—there will be more L2 chains in the future.