Chinese LED Grow Lights. Why are all the best discontinued so quickly???

So I've been noticing a common trend with these Chinese LED grow light manufacturers, they are creating pretty decent lights then they are instantly discontinuing them. One of the particular models I've seen are the Aglex G series (G220 & G110) "bar" style grow lights. They appear to be knockoffs of the bigger light companies but from the user photos that I've seen they looked pretty promising. One person who used the Aglex G220's is @jlhomegrown on Instagram. He is using two G220's in a 5x5 space and the results look very good. A good G110 grow would be @stonedmoosehorticulture on Instagram. They are using two G110's and those results look very good as well. Another light that was discontinued fairly quickly was the Mars Hydro SP250. Another "bar" style grow light but had very good results. Could it be the price point for these lights? The Aglex lights were very affordable. The G220 at $150 and the G110 at $89. The Mars Hydro SP250 was around $250. It seems like anything around or under $1/w is a pretty darn good deal. Has anyone else noticed this trend?

What that sketchy pop-up companies that reverse engineer copyrighted material, use their marketing to claim the same thing (quantum boards) and sell it for a fraction of the cost with sub-standard parts disappear frequently?
Say it ain't so. Well shiver me timbers mate, what a fucking shock.

Shenzen Meijiu and Shenzen umol tech are still selling good lights.