Since time immemorial there has been anarchy in the financial world. People did whatever they likes, a few tried to correct people and intervened every now and then, rest kept working on more and more plunder, the life on the planet was made terrible by the actions of a few, there was no order, it was a lot like an episode from Gotham.
No kidding, it was chaotic and dystopic. Nothing was working out, and after a few decades, the economy would burst out in to an ulcer pain. This would further disturb the whole system.
The dark age of banks fraudulent activities, greed and excess that led one financial disaster after another until the last 2008 crisis came. The government had no other option but to bailout all other banks with a staggering $800 Billion fund, because this time it was a kneeling 180 year old prestigious bank.
The government could pay for the bail out, but not for companies relocating, workers losing jokes, homeless people, third world development and all the good causes of the world. But this is another debate that revolves around a lot of economic variables.
The fiat currency offered limitations, mostly because every country had its own. While you could get it in other countries, but there were limits on transferring it, carrying it, investing in it, buying and selling in to one. Despite exchanges, the heavy cost made a lot of commercial and big scaled money transfers very very ineffective.
There was room for improvement and if the world had to go further into specialization and the liberation of the economies from their tyrant leaders and poverty then something big had to show up. Because, in no way were the governments around the globe fixing their taxation and discouraging policies. This is when the bitcoin white paper first showed up and it became one of the very well timed thing that has ever happened in human history.
Satoshi obviously came up with a very interesting concept, at a very interesting time, that only a small minority understood back then, but more people agree now. The world could use some decentralization, some omission of banks, some freedom in the movement of money, some permission-less innovation and digital trust. While, initially it was only about decentralization and a reducing in the inflation plague, the idea became bigger and better with time.