This story is available exclusively to Business Insider subscribers. Kyle Ray spent years waiting tables and bartending to pay his bills while building a window cleaning business on the side. By 2015, "if you were Googling 'window cleaning Houston,' we were showing up in the No. 1 position," the entrepreneur told Business Insider. I don't ever want it to go to voicemail," said Ray, who uses AI to handle calls that come in after hours or on weekends.