Without some statistics to back it up and a solid definition of "razor market" it's hard to determine. For example, we could consider electric razors, disposab

Without some statistics to back it up and a solid definition of "razor market" it's hard to determine. For example, we could consider electric razors, disposable razors, and replaceable head razors as three separate markets. They are substitute goods, so as the price for replaceable head razors fall that market grows. In response the market for electric razors and and disposable razors contract.