If it's proprietary tech than that risk is part of the game. This is one reason FOSS zealots are so, well, zealous. Without access to the source code for audi

If it's proprietary tech than that risk is part of the game. This is one reason FOSS zealots are so, well, zealous. Without access to the source code for auditing, and especially without access to proprietary programs for running at all, your chances of properly evaluating the software is effectively nil. The choice between proprietary data systems seems more likely to be driven by the reputation of the company than by the reputation of the tech. The whole point of paying when OSS alternatives are available is that when something breaks or goes wrong you actually have a proverbial "neck to choke" (one that isn't your own ;) ).