I make computer games in my spare time. I put them for free on my website as a portfolio and because I'm a generally nice guy.
In your case I'm required to pay extra taxes because I've created something that I want to share for free under my own terms. Mainly some advertisement to pay the hosting, credits and the ability to get feedback.
I do actively control that people don't copy the executable and mirror it without credit, because then I miss those advantages. However I'm not willing to pay higher tax on free games I create to prevent people from claiming then as their own.

Copyright is a very broad law that anything anyone creates is protected. If I write a poem on a birthday card that is protected and Hallmark can't copy that, just like if I create a multi million dollar movie it's protected so someone at home can't share it for free.
While the idea for taxes is nice, it's not a practical solution given the broadness of copyright law.

It turns out that the people who like to hack the copy protection and share the game aren't the real gamers.
I've read a success story about a game in which the finish of the first level wasn't there when the DRM check failed. It was cracked multiple times & uploaded but none of the pirates notices the game could not be finished. It took 2+ months for a real crack to be made while lots of gamers got frustrated with the cracked version and the game had higher sales then normal in the first 2 months.

So making sure that an illegal version has a worse game experience then the genuine article will make people pay for it. If the copy protection is totally obvious then crackers won't upload buggy cracks and thus the illegal version will have a better game experience.

I've given several classes in programming games in the Netherlands. Most recently for a group of 11 year olds at IMC Weekend-School. For this I use the off the shelf tool, Game Maker.

What surprises me is that an 11 year old kid, with a 10 minute training, can create a fun and interesting game in just 2 hours. They can analyse there game concept and add a layer of abstraction to it to program it. They can convert the idea, the cat needs to move to his basket while luring the dog away to the concept, the object with the sprite cat needs to collide with the object 'bone' to make the object 'dog' disappear after which it needs to collide with the object 'basket'.

With almost no training they can create a large variety of games (Windows only). And admittedly, they vary greatly but there are some very fun games with them.

Using an off the shelf program might not teach them to become perfect programmers but it does teach them to think up a game concept, analyze it and convert it to a system of rules. Being able to critically analyze a concept and convert it to it's basic is a very useful skill to learn, one which will also help them if they decide to go programming.

I'm an administrator of a variety of game communities and I see many young kids passionately working on there creation and I fully agree with this study. Already, many schools in the Netherlands but also worldwide teach game creation with tools like Game Maker and I've seen many kids who learned a great deal off it, myself included. While an off the shelf tool might not teach them to become programmers, they learn a great deal more, have a more fun experience and thus an easier learning curve. While starting from scratch might be it for some talented kids, you can interest a great deal more kids with an off the shelf product.

You don't need HTML email for that. Just write the parts that need extra focus in all caps and people can quickly skim over your email.