These days, companies much larger than one person can shut down overnight, without warning. It happens.
Frankly, barring some accident, I'm betting the solo company is more motivated to keep things running than the larger company that might sell out to a larger rival and allow their service to be shut down or changed negatively (with little or no warning to customers).
Frankly, barring some accident, I'm betting the solo company is more motivated to keep things running than the larger company that might sell out to a larger rival and allow their service to be shut down or changed negatively (with little or no warning to customers).