They do not always have to be perfect conditions. Sometimes (according to some reports) a flower will occur when a plant is stressed. Maybe it thinks,"I am in touble! Better make some seed! The speices will survive!"
Some people have reported cuttings they are trying to root. Whether that was going to happen or not, I do not know. Others in plants freshly repotted.
Now, supposedly blue spectrum(ie metal halide) will promote plant growth and red/orange spectrum(high pressure sodium) will promote blooming. I know one grower who swears by it(especially with Drosera petiolaris complex).
Has anyone experimented with both types of lighting?