Testing is a critical process in any enterprise environment because it puts your reputation at stake.
It took only one bug and some of the biggest companies in the world lost trust (and money) of millions of their clients due to a system error. Their experience tells us how fragile a company's success can be if there is no safety net represented by a reliable testing solution.
And it's not only your clients you can lose if not testing properly. You are giving up chances of achieving higher quality of your products or services and expanding your business portfolio. This applies no matter which sector you operate in.