Here's my thoughts on clones.
Without clones, I wouldn't know what atomizers or mods were the best for me. Seriously. Here's how the progression went for me.
I bought a clone of the brass GP PAPS (Lux v2.5) from FastTech for $16. It was such an amazing device that I bought two more and have another on order. I also bought a GP Heron clone, just to have a matched set. liked it, bought another, and have a third on order. The clone GPin springs in the Heron suck, so I bought authentic replacement springs. Huge improvement. Then I saw an authentic 18350 GP v2.5 lux on eBay with an extra 18650 tube and bought it. Then I went to VapourArt and bought some extra Lux tubes to upgrade my clones. While I was at it, I bought replacement buttons to upgrade the clones some more...then I bought a Heron tank tube, because the new clones don't come with the logo, and then I got the Lux airflow rings to pretty them up, and the 510 adapter, because the one that comes with the clones sucks, then some o-rings and more spare springs...
Over $300 in VapourArt's pocket, despite me purchasing clones and an authentic GP mod secondhand. And they got to clear out some old inventory. (For the record, I purchased the last v2.5 18650 GP Lux tube.)
A similar situation occurred when I bought a clone ZNA. It impressed me, so I bought a lot of authentic accessories for it, followed by the purchase of an authentic ZNA.
For many people, clones let us "preview" a mod or atty, without spending a lot of money on something that "someone" said was a great buy. We'll appreciate and value the authentic and use it around the house, and take the clone to work, to the bar, etc. I know that the words "free advertising" get thrown around a lot when it comes to clones, but the reality is, it's true.
If clones really did hurt the original manufacturers, and impacted sales, then Atmomixani and Svoemesto would have been gone a long time ago. The number of Nemesis and Kayfun clones is absolutely staggering, yet both of those companies have thrived and developed a huge following and have trouble keeping items in inventory.
Edit: The only people that clones hurt (in my opinion) are those who have spent a lot of money to feel like members of an "exclusive" club/group.
I'll get off the soapbox now.