You're confusing Nike with Puma Xtro 
AFAIK Rudolf left his brother to start up Puma.
(That was of course after his reindeer business went down the pan after he got prosecuted for copyright theft).
I stand corrected.

(Of course, I was simply setting you up for that topical Rudolph joke!)

A Russian couple were strolling down the street in Moscow, when the husband felt a drop hit his nose. 'I think it's starting to rain,' he said to his wife.
'I don't think so, it felt more like snow to me,' she replied.
'No, I'm sure it was just rain, he said.' Well, as these things go, they were about to have a major argument about whether it was raining or snowing. Just then they saw a minor communist party official walking toward them. 'Let's not fight about it,' the man said, 'let's ask the Comrade whether it's officially raining or snowing.'
As the official approached, the husband stopped him and asked, 'Tell us, Comrade Rudolph, is it officially raining or snowing?'
'It's raining, of course,' he answered and walked on. But the woman insisted: 'I know that felt like snow!'
To which the man quietly replied: 'Rudolph the Red knows rain, dear!'