The problem with proprietary software isn't royalty fees, although such are a drag on overall productivity, as much as security. Given the surveillance state that is wrapping it's tentacles across the world, I am extremely reluctant to allow 'black box' software to retain it's historic command of my communications.
Were hashgraph to move to an open source ideology, even while maintaining the IP royalty scheme, I'd be much more certain it will change the world.
For a little old lady, you're certainly abreast of cutting edge technology =)