Maybe. Maybe not.
Most of what I buy from Amazon is books - usually How-To or Reference books that I've read about in an article, blog, etc.
Where I live, there is only one brick & mortar bookstore with any degree of selection of new books - a small Waldenbook store in a small shopping mall about a 20-25 minute drive away. They seldom stock the books I purchase, so I have to call or go there and order the book, wait for them to call and let me know it has arrived, then drive there to get the book.
With Amazon, I read a few reviews of the book from the comfort of my home then do the one-click ordering thing and a few days later the mailman leaves it at my door.
Faced with those two options, if not for online shopping, I would purchase fewer books.
That's part of the dynamic marketplace in which we live. A hundred years ago, upwards of 95% of Americans has to work in food production/agriculture. Due to technological advances, now that number is a distinct minority.
After Henry Ford came along, a number of horse buggy manfacturers went out of business.
You and I view revenues to government bodies in a different manner. I don't view activities by citizens as opportunities for government bodies to generate income for collective uses. I view government revenue as needed to pay for the necessary services associated with the activity.
Suppose 1,000 people in a NC city today decided to purchase a copy of the Michael Jackson CD "Thriller". If they did it online via Amazon, they would make the purchase from their home computer and the USPS delivery person would deliver it a few days later as part of his regularly scheduled route. That creates relatively little demand for government services and need for government revenue.
Now suppose those 1,000 people decide to get in their vehicles and drive to a B&M store to make the purchase. That increases the wear & tear on government infrastructure, creating the need for government revenue. The presence of the B&M store increases the need for government services.
Plus, that's 1,000 more vehicle trips belching exhaust that so many people seem concerned about these days.