>>PHP is easily and inexpensively deployed on commodity hosting.
So is everything else now that dirt cheap VMs are the norm.
Not easy enough for most people.
>Much of which is wrong or even dangerous.
If it stupid and it works, it ain't stupid.
>A large number of developers, but most of them possess a shockingly small amount of knowledge.
The 10% of people with the vast knowledge are not going to write the 100% of the software, so the people with "small amount of knowledge" will still be there.
Just like you don't just have Picassos but also regular painters.
Not easy enough for most people.
>Much of which is wrong or even dangerous.
If it stupid and it works, it ain't stupid.
>A large number of developers, but most of them possess a shockingly small amount of knowledge.
The 10% of people with the vast knowledge are not going to write the 100% of the software, so the people with "small amount of knowledge" will still be there.
Just like you don't just have Picassos but also regular painters.