To put it simply; your business will suffer. If someone hacks into your network, they can steal so much precious data. Then, they can use this to steal money, sell on the black market, etc.
What’s more, things like ransomware can cost you lots of money as well. You’re held at ransom until you pay to remove the virus.
Lastly, it impacts your reputation as a business when your cyber security gets breached. You don’t seem very professional, and it can hurt you as you try and maintain your customer base.
To know more: cybersecurity problems