Does it warrant 100s of millions to train a pet skills? no.
Heck yes my friend! It is just like any other professions in the game, if you are good at what you are doing, you need to be paid accordingly.
Not everyone has the patience or the technique down to raise all skills to 120.
I agree, melee skills are a breeze, anyone can do it.
Any magic skill, to get it to 120, takes an enormous amount of time.
To raise a pet from level 1 or 2, it takes an enormous amount of time, unless you are tanking, even then you need vet and magery to keep the guy healed, and still ends up dying a number of times.
Any pet with dragon breath, training magic skill on that takes CRAZZZZYYYYY amounts of time
A lot of pet training can be done half afk while keeping an eye on the screen.
You may have your eye on the screen, that also means, haha, IRL you are paying for your computer, your monitor and your tv to be on for that period of time, HAHA.