You're underestimating the amount of work that is put into creating a complete font family -- each glyph must be drawn, tweaked for visual balance, kerned prope

You're underestimating the amount of work that is put into creating a complete font family -- each glyph must be drawn, tweaked for visual balance, kerned properly, etc. Bold weights and italics are sometimes created algorithmically from the base typeface, but still require further editing to look good on the page. It's the attention to detail that matters.