I guess they will reach a point where the project is too unstable way before.
I think they have few tough "tests" ahead for next ~2 years:
1) Lawsuit with Crytek -> how much they will lose here and what drama it will create...
2) For how long whales will believe in their new year 2018 marketing strategy - release everything on time, but with content missing and/or broken - so far it works...
3) if they decide to allow backers to buy all or most ships with in-game money (its was promised in some 3.x patch...?!) - how it will affect ship sales...I think its marketing suicide so they will delay this as long its possible..
4) Technical part - with each patch SC development gets more and more complex I guess they are running in engine limitations and in "high fidelity" wall every day working long overhours i guess at this point for at least year for some guys = team morale probably is all time low...
Lot of open positions they have now, so they may hit human resource wall - nobody wants to work at CIG...