Its the way you take care of the paint that makes it pale. I have always kept white cars and they never go pale. Not once did I need a compound on my last white car in 4 years till I sold it. It was as white as it originally was. Just keep it regularly waxed with ONLY SYNTHETIC wax.
All colors get pale with time specially if not polished/waxed regularly when environment takes its effect. Incase you used natural waxes then also all colors extract the yellowish effect from those waxes but since white is white, that paleness starts showing on it.
Its about how you keep it. Color isn't at fault