I mean, I found it in two pretty substantial dictionaries after a quick search: https://www.dictionary.com/browse/sike https://www.oed.com/search/dictionary/?scope=Entries&q=sike
Along with countless other dictionaries that cover slang and alternate spellings, but I figured you wouldn’t think that those counted.
But I will say that if being in a dictionary is a requirement for a word being part of the English language, you’re not accounting for a large portion of modern American/Internet vernacular. People who actually study language would never have this take, as languages are made up of the words people actually use, not the words that a board of folks decide to put into a list.
Big companies do this on purpose. They want their earnings and their expenses to match up as close as possible, because companies don’t pay any taxes on money spent on making money, only on profits. So if a giant company is in the red, the vast majority of operating expenses are tax deductible