so is it abandonware or somesuch now?
No, it just has no funding or staff. To put it simply, let's say there's a plot of land in the middle of town and there's an old abandoned bar on that plot of land. Abandonware would be like if the plot of land has no owner because they died or for whatever certain circumstances (in most cases, a game's license ends), however, in this case, Lego Universe is simply just an abandoned bar, but someone still owns it.