regarding office lighting and industrial lighting, the prevalence of fluorescent tubes shows you what is more efficient and cheaper......they wouldn't use them if leds were cheaper or more efficient.
You're confusing yourself - as I said earlier, fluorescents are considerably cheaper to install, but their running costs are a lot higher, and so are their maintenance costs.
It's false economy to fit fluorescents, LED lighting is considerably cheaper in the long term, and gives a more pleasing light as well.
I'm happily sat in my new small workshop with two LED panels in the suspended ceiling, the large revamped shop downstairs has a large number of the identical lights.