Insurance companies evaluate profitability by looking closely at loss ratios in order to determine if, over time, the losses incurred are trending above the premium paid. If the account is experiencing a high volume of high-dollar claims, the company may decide that their pricing is unsustainable and decide that a premium increase is necessary if they are to continue to offer insurance.
It is not customary for this to occur after just one loss, whether big or small. However, a frequency of claims may raise red flags and initiate a discussion. It is important to remember that insurance companies are for-profit businesses - in order to pay claims and their operating expenses, the hard reality is they must make more money than they spend.