This isn’t the case with companies like Apple, Samsung, or LG, who have to first and foremost ensure that their chargers are safe to use with their proprietary devices. As you would expect, this reduces the overall effectiveness of their chargers, to the point where it’s probably not even worth buying them unless all your Qi-ready devices are also made by those companies.
Technology has come a very long way since and modern Qi-operating wireless chargers like the invisible wireless charger are miles ahead in every meaningful way. For starters, the 10W charge it delivers at distances of up to 20cm or more should speak volumes about the standards these chargers have come to reach.
Although wireless charging as a technology isn't exactly brand new, the concept has to be revisited every time a new Qi-compatible smartphone or tablet hits the market. To that end, every wireless charger needs to be accommodating to not only existing devices but to effectively predict and adapt to how newer models might behave compatibility-wise.