Since we currently only see the first release of MA's space it is to early to argument how many ships will be needed or not. Of cause for pure transportation means we might be settled when hangar owners get their privateers, but space mobs still havent entered and asteroid mining is also missing. When counting the number of neutral space stations my guess would be that MA's vision for them is not just for safety reasons.
MA stated they think of introducing warp in a later patch and currently the largest distance in current space is 20000meters - im quite sure that i dont need warp for such a distance, but maybe MA plans to extend space and readjust distances between planets later on, when they got warp working...
A larger universe will mean way more room and usage for operating ships, exspecially if sleipnirs/interceptors dont get warp.
MA also stated that they will sell those unlimited ships just now and later on only limited versions shall enter the market - what do you think how many owners of a limited mothership will put in 100k+ to max out their ship for battle ?
So 14 motherships in an ever growing universe - might be nice for the current space - but how will space look like in 2013 when we have double the amounts of planets and probably alot of asteroids inbetween.
Keep in mind when current hangar owner bought there ships and how tiny that 'space' was.
Keep in mind when Deathifier set the milestone with buying Treasure Island - how many of you might have thought back then that there will be 100+ landareas (not all player owned yet, but maybe soon) a few years later ? And how many of those later LA's would you think are more successful then TI ?
Im sure many of the mothership owners are fully aware that a mothership while require alot more logistics then a landarea but it could net alot more operating profit then any of the current landareas if MA makes the right adjustments to them over time (since they are up 24/7, they should be put to use 24/7 which will require soc like management rights for guest list). And before people tell me that im dreaming - i said 'could' no 'will' - cause its all dynamic as we know