In the early days of Bitcoin, anyone could find a new block using their computer.  But Bitcoin mining has advanced and is no longer the cottage-industry it was, having evolved to the point where specialized, high-powered machinery is required to profitably excavate bitcoins today.  Yes, anyone can mine, but those with low-powered setups spend more money on the electricity required to run the equipment than what will be generated through their mining efforts.

There is a wealth of information online regarding mining Bitcoin – but since that aspect of Bitcoin is of little interest to me currently, I do not spend much time researching it.