Alright it's time for a little Maths:
Now with these calculations I'm basically going to be as generous as possible, and use statistics that basically don't even reflect reality just to prove how ridiculously high your playtime would have to be to unlock "competitive champions and runes" as you're saying.
So out of 100+ Champions and thousands of runes, I'm going to pick the top 30 Champions and top most used runes (more explanations of this later):
We're going to assume that each League of Legends game lasts 30 minutes. In actuality I think games last longer than 30 minutes, but like I said I'm being generous, so each game lasts 30 minutes.
According to the wiki page:
You get 87.36 IP per won 30 minute game (rounded to 87)
and
You get 58 IP per lost 30 minute game.
http://leagueoflegends.wikia.com/wiki/Influence_PointsSince we're going to assume that in our quest to unlock these "competitive necessities" we've won and lost 50% of the time, it averages out to be 72.5 IP per game.
We need to decide how much we're going to play each day. Once again, I'm going to be generous and assume that we play 8 hours each day. That's 16 games per day. I know for a fact that nobody in this forum plays 16 games per day, and this isn't INCLUDING the times between each game waiting for queues and queue dodgers (very common), but once again, I'm being generous.
You get 150 IP once each day per win. 150/16 = 9.375 - Rounded to 9.5
So 72.5 IP + 9.5 IP = 82 IP per game, assuming you win and lose equal amounts and assuming you play 16 games per day.
Now let's find the costs:
I'm using Elementz competitive tier list from this page to calculate the top 30 Champions' IP cost:
http://www.reignofgaming.net/tier-lists/competitive-tier-listAlistar - 1350
Nunu - 450
Morgana - 1350
EZ - 6300
Karth - 3150
Shen - 3150
Sona - 3150
Jayce - 6300
Kat - 3150
Zyra - 6300
Graves - 6300
Olaf - 3150
Irelia - 4800
Shyvana - 6300
Diana - 6300
Malphite - 1350
Gragas - 3150
Corki - 3150
Maokai - 4800
Anivia - 3150
TF - 1350
Skarner - 6300
Vladmir - 6300
Blitz - 3150
Rengar - 6300
Rumble - 4800
Cho - 1350
Ryze - 450
Jax - 1350
Darius - 6300
Total = 114750 IP
114750/82 = 1399.39 = round it to 1399 games. If each game takes 30 minutes then that's basically 700 hours of playtime.
That's almost 3 months of playing 8 hours (of playtime) per day, and we haven't even entered the rune costs yet.
I calculated the rune costs by looking at the top 10 highest rated guides on mobafire.com and taking 12 different types of runes (to make rune pages for 3 different champion roles). All runes are T3.
Mark of Insight x9 = 3690 IP
Seal of Resilence x9 = 1845 IP
Glyph of Shielding x 9 = 1845 IP
Quint of Resilience x3 = 3075 IP
Mark of Strength x9 = 1845 IP
Seal of Vitality x 9 = 3690 IP
Glyph of Force x9 = 3690 IP
Quint of Potency x3 = 3075 IP
Mark of Desolation x9 = 3690 IP
Seal of Clarity x9 = 1845 IP
Glyph of Warding x9 = 1845 IP
Quint of Swiftness x 3 = 6150 IP
36285 IP
36825/82 = 442.5 games = another 221 hours.
So 921 hours - Nearly 1,000 hours of playing 8 hours a day to reach "competitive status" according to Chemical_Art.
Yet if instead of playing League you're instead working and making minimum wage in California (and getting taxed 25% of your paycheck) you could work 166 hours and buy the $1000 PA Kickstarter Tier.
Also let's please remember 30 Champions and 3 rune full rune pages is what Chemical_Art considers "balanced". To actually unlock ALL the content with playtime it would take well over 3,000 hours of playing 8 hours a day for over a year (with new content constantly being released).
And League of Legends considers itself to be a "competitive game". A competitive game that you have to play nearly 4 months of 8 hour days just to compete? When there are games like DotA that have all the content unlocked to you right from the beginning?
I'm sorry, but if you have a problem with PA, you should have a problem with League. You can spend the time grinding through the game or spend your own money to become "competitive", but either way you're spending your life to be able to compete. I see no difference.