Part of the reason the spear owned the close-range manual battlefield is that it's a lot easier to get a decent spear than a decent sword. In this day, when quality swords can run as little as $150, it's silly to think one must pay more for a decent spear.
I don't think so.
It may be true that they often take less material and are less expensive to make than a large sword, but they ruled the day because they were more effective than a sword in many types of combat.
A sword gets all the attention today in fantasy and reenactments, they have all the lore and honor and chivalry tied to them. They have prestige associated in fantasy and reality.
But in reality a spear was close to a rifle, and a sword a handgun in much of history.
Some tactics made great use of swords, the Romans are especially well noted to have accomplished a lot in formation with short swords.
However a spear in many points of history have clearly been superior to a sword.
The sword however always had more acceptance also being the gentleman's 'sidearm'.
Whether it was a lance, a halberd, bill, pike, or various other variations of the spear or polearm by many different names, they were normally superior to the sword in combat.
The sword was no match for the polearm/spear.
Here is an excellent historical example relatively recently of what were essentially cowboys with spears on horseback defeating the United States military:
http://en.wikipedia.org/wiki/Battle_of_San_Pasqual
The lancers combined with some local militia rose up to defeat the invading United States military during the Mexican American war in California.
In this battle the Californios lancers used lariats to lasso the enemy, as well as speared them to death.
The US military was superior in number, though they were tired from the long trek there.
Through some tactical manipulation they got the cavalry to chase them, turned on them, lassoed them off their horses, and speared them to death.
Another noteworthy comment:
http://en.wikipedia.org/wiki/Lancers
At Waterloo, French lances were "nearly three meters (nine feet) long, weighed three kilograms (seven pounds), and had a steel point on a wooden staff," according to historian Alessandro Barbero. He adds that they were "terrifyingly efficient." Commander of the French 1st Corps, 4th Division General Durutte, who saw the battle from the high ground in front of Papelotte, would write later, "I had never before realized the great superiority of the lance over the sword."
I would not say a primary reason
"the spear owned the close-range manual battlefield is that it's a lot easier to get a decent spear than a decent sword"
I would think that would be way down the list, past the much more important reason of "the great superiority of the lance over the sword".
A lancer could stab a swordsman before the sword was even in range. All the power of a charge or strike were also easily pinpointed on the spearpoint, while a sword took more skill to use to less effect.
However it certainly is not a nice thought that what is essentially a long pointy stick or a stick with a metal point is a much superior weapon than a fine hand crafted sword made by a master, with all its prestige, tradition, and cultural significance.
But it was, just as a mass produced sheet metal AK of loose tolerances is a superior battlefield weapon to the finest precision hand crafted pistol.