just a little note
the new battlestar gallactica was done with lightwave - as is enterprise adnd teh cg shots in dsn and voyager too, as were the effects in firefly, dune and children of dune, many fo the 3d elements in buffy were done in lightwave including the last episode in teh hell mouth

of the effects in stargate sg1 are also lightwave though maya is used for that aswell
lightwave primary market is tv broadcast though it has been creeping into the film market ( i believe all teh effects from teh film torque were done with lightwave jsut to name one )i think once lw 8 is released, a good link to renderman would see lightwave

more prevalent in the film industry though at the moment in films its mostly used for modeling ( though there is one scene in star wars ep 2 that was modeled animated and rendered in lightwave as they didn't have time to do it in there other pipeline and the shot doesn't suffer at all from bypassing maya and renderman )
with reguard to B5, sadly foundation imaging is no more but there are many studios using lightwave still from digital domain (who use lots of other software aswell though) to eden fx, zioc studios and many more
as for lightwaves use in the 3d field to be slim i disagree the emmy awards all 5 of the candiates from last year were done with lightwave as i recall
as for maya being dominant - true it is so in the big studios that have techincal directors to progrtam mel code all over the place - the result is you dont have generalist maya users you have modelers - animators - dyanmics specialist etc also its loosing a fair old wad of its market share to softimage xsi more and more and when it comes to effects the houdini is the master though its price point and its rather challanging to master interface will put off freelancers like myself
anyway i wouldn't worry to much about lightwaves future lightwave 8 should be out SOON (though they have been saying this for a while now) so those who bought lightwave 7 what within the last year should be eligable for the free upgrade to 8 ( good news on this too is we're getting 3 brand new content cd's =) which oh so terribly modest me has contributed too =) a cartoon bird based off a parot but in a sandy colour instead of bright colours