In recent years a number of Bitcoin mining companies have gone public on the stock exchange. Although these events are not much celebrated, they are one of the great milestones for the institutionalization of Bitcoin in the global economy.
The entry of these companies makes the mining activity increasingly competitive, with specific devices being developed specifically for the activity. This results in a much safer network for the user and a much more prepared network against an eventual 51% attack.
Furthermore, the admission of these companies to the stock exchange brings institutional security to the sector, as the shares traded on the stock exchange may have millions of customers around the world, making it difficult for any kind of government repression of the sector in the future.
Finally, through the traditional financial market, mining companies have ample access to credit, allowing for an accelerated expansion of this sector, which plays a fundamental role in the Bitcoin network.