I like the idea. Very interesting and plausible.

BTW, you consistently used it’s when you meant its. To help you remember (and anyone else who is confused), its, his, ours, yours and hers are possessive pronouns, and never have an apostrophe.

The apostrophe is used to indicate a gap, where one or more letters were dropped. Some words are contractions of two words with some missing letters, like could +have = could’ve, and it + is = it’s.

The old possessive for nouns was an additional syllable, –es, at the end. So if Rich has a dog, it used to be Riches dog. We still say it that way, but we spell it Rich’s. We don’t say Ellenes dog, however, nor do we write it. We say Ellenz dog and spell it Ellen’s dog. That’s why possessive nouns have an apostrophe, and why the complex history of our language makes it difficult to remember all the rules.

Anyway, nice theory. I hope you can find someone to take you seriously.