Does Bitcoin have a Mining Monopoly problem?

[sugarpie2018]

As professional mining groups with specialized computer chips emerged. Bitcoin mining is gradually becoming centralized.  News about how bigger and influential companies in the bitcoin economy by virtue of their sheer amount of processing power, or hash rate, are taking controls over the Bitcoin mining continue to widespread, making more undeniable. Just to clear on this topic, Help me understand whether the above topic is entirely true. And if it is true, what is the its implications.