No way - operatic singing techniques are
fundamentally different from other kinds of singing, and much harder work physically. Next time in you're in the shower or wherever you can sing, do a chorus of some song you like. Then take a deep breath and instead of using your throat as you do when you talk, use your abdominal muscles to
push the air out of your lungs while you sing, such that you can feel the notes resonating your chest cavity. It isn't just louder, it fundamentally changes the characteristics of your voice.
Part of what makes popular music so compelling is that using microphones to amplify the voice allows singers to present a much more intimate quality - they're right there with you, and that intimacy is strongly coupled to the emotional content of the song, even if it's coming through a stadium-sized sound system. It's like the amplification creates a bridge between the singer and the audience. but in opera, (even with amplification) the singer is bridge between the melody and the audience...a big reason why opera singers don't always look right for the part, but when they open their mouths, it ceases to matter...if they're good enough.
I like the opera a lot and go several times a year...but don't get me started on all the things that are wrong with the opera industry. As with nerdy and self-indulgent jazz, the arts establishment is fucked and limits its own audience by wasting huge amounts of money on packaging the product so it becomes a high-priced status symbol - perhaps even deliberately. Every year in San Francisco they do one or two free operas at the baseball park (via simulcast from the opera house), and people love it - last time it attracted over 35,000 people. But if you want to go the Opera house you'll probably have to pay $75-1000 per ticket to subsidize a small army of union stagehands and visual designers, and they send out glossy-full color begging letters every 6 weeks as if people went to the opera to look at the costumes and stage furniture. Well, I guess some of them do, but I imagine that composers and singers would rather be appreciated for their musical ability than their ability to look like they stepped out of a history book.