Most of the time, the people who argue against the mobile web are the same people whose livelihoods depend on Java and native apps.

Ruby on Rails vs Java - Commercial #1 of 9: https://www.youtube.com/watch?v=PQbuyKUaKFo

Erase the Native vs. HTML5 Development Debate with PhoneGap: https://www.youtube.com/watch?v=uea1kAXlGIY