I am upset at you people from TB. You have a loyal group of users that understand the uniqueness of this program and have started to rely on it. You know that you can put a premium price tag on it, because it is just so much better than any mindmapping or note taking app.
BUT you need to provide a user experience (including control of ones own data!) that is up to expectations in 2017.
Not being able to access my own, locally stored data because of a server error preventing synchronization? No comment on the issue whatsoever, for a whole day? What's the matter here? You could be so much better than Evernote! I'm sure you made enough money to invest in the kind of development that would enable you to step out of a niche existence.
Maybe providing a walled cloud service is not the answer. I also don't know why you put your marketing focus on business and management. I have the impression that you don't know what you want to be. 10 years ago maybe it was great to have a mindmap hosting all your files and connected to a calendar and so on. But what's the competitive edge you still have over all the other apps trying to make it easier for managers (or anybody) to organize their work?
I don't think this is why people are using TB.
What you have created is really a general purpose, personal learning and knowledge tool. A grid for information (of which there is plenty!) in order to create knowledge again. You could provide (for a fee) basic sets of logically linked terminology from a wide range of academic specialties.
I'm an MD PhD, so I'll give an example from biomedicine. There is a gigantic taxonomy of hierarchically structured Medical Subject Headings (MESH), available from PubMed, that you could commission someone to import and assign with thought and link types. Scientists in any field of biomedical research could download this and enrich it during their studies and connect papers they have read. Like when in the old days one would take a textbook and scribble and paint all over it. Only 100x better.
Or imagine what it would mean to a medical student to have a blueprint of the whole anatomy of branching blood vessels and nerves innervating muscles that are themselves attached to protuberance x of bone y. Organs containing cell types that, in order to communicate with other cells, produce transmitters or hormones which are themselves encoded by particular genes and act on particular receptors.
All of this constitutes hard facts that could be represented by TheBrain better than with any other tool I'm aware of.
If I was a little more convinced of your strategy and pricing policy, I could confidently recommend TB to colleagues and friends. I would suggest a deal for you and develop the first Brain for medical students.
Really, teachers of any field (and possibly even publishing houses), would have an incentive to develop Brains as starting grounds for anybody wanting to learn anything.
Meanwhile, I'm stuck because I can't access stuff I have written using TB.