Not necessarily. As i said above I openly trade the very domains I'm saying should be avoid as the market is there for them. Admittedly it's dwindling, but it's still present.
I don't think it makes a good brand having to bolt your domain name extension - in general. What if I build lights.co, lights.uk, lights.com etc? Your brand name is lost for each extension that becomes available and used. What if you have a high street shop, is your brand still Lights.co.uk? How do you present yourself on social? twitter.com/lights_co_uk - How do people search your brand on Google to increase your brand metrics? Do they put in lights.co.uk or do they go to lights.co.uk in the first place? And don't even get me started on people having to search "lights" to be able to find your specific company.
You base all your positives as if anyone who ever wants to buys lights knows about domain names be it their value or their extensions and so on.
Even I could come up with positives for using lights.co.uk even though it appears I'm against it. There are some positives. My whole point is, day one, building a business, the negatives outweight the positives. You'd be better choosing something as close to brand perfection as possible for probably significantly less money.