You can compete with large companies, you can be successful if you just come up with a solution that is more innovative than the one offered by the competition. Therein lies the key to success in this regard from my point of view.
Although large companies have many resources and a lot of financial power, if the solution you provide is better than theirs, surely even the company itself will want to acquire your idea and you will end up winning.
It is only a matter of your proposing it and I know that with a lot of effort you will be able to achieve this goal because you must stop seeing these companies as owners of the monopoly and believe more in what you do.
Thanks a lot @reinaldoverdu for the amazing feedback, an extremely good idea will beat resources any day and any time.