As the boundaries delineating law firms and legal tech providers begin to blur, a debate is swirling over how much mingling is good for business. Or, as some believe, bad for business.

Over the past few years, a growing number of law firms in the U.S. and U.K. have been helping legal tech startups design their tools, making equity investments in those startups, or even spinning off their own legal tech subsidiaries. Yet while many believe legal tech plays a vital role in the delivery of legal services and the future of the legal market, some are questioning just how close is too close when it comes to law firms supporting technology businesses.