I think there was more low hanging fruit. In 1993 or so it might have been possible to
When an easy way to make money is discovered, people flock to it, and it quickly becomes a more difficult way to make money.
Early adopters take a risk. They invest time and money and they're risk that the items will fail. They took a risk, and for those early adopters it happened to pay of spectacularly. People noticed, and flooded the market. Today there is still a huge risk, just a different risk of obscurity rather than a risk of the device not becoming popular.
There have been many such places where early adopters succeed. Early adopters in ebooks, who had books even when they were high risk, rode a wave to great profits even when their books were poor quality. Franchise restaurants in the 1960s took a risk on building businesses of unknown popularity and many became millionaires. In the 1990s a few groups took risks and made online businesses before the WWW was even a thing people knew, and some succeeded spectacularly, others wanted to repeat the success and flooded the market with a dot-com bubble.
Look around you, there are opportunities everywhere if you take a risk. They will require an initial investment. You may or may not succeed. If you succeed spectacularly you will find your previously untapped market flooded with people trying to imitate your success.