The tin foil hat interpretation of this is that it is all by design, by whatever cabal runs everything, to subjugate the masses and control them directly or indirectly. The generous interpretation is closer to an extreme version of Sturgeon's Law[0] where this is just a natural, even inevitable, byproduct of most things being garbage. Like most things the truth is almost certainly somewhere in the middle.
[0] "90% of everything is [crud/crap/shit]" https://en.wikipedia.org/wiki/Sturgeon's_law