I earn money through online advertising, and I take it that you're thinking of monetizing through Adsense. $3,800 PER DAY is very very high -- doable, but you've got to have massive traffic and attract the right type of people to earn that much.
It may be worthwhile to lower your expectations to more realistic level. Your little exercise reminds me of the rush to build websites on the topic "mesothelioma" when it was revealed circa 2004-2005 in a New York Times article that this keyword in Adwords cost about $105+ per click. So a lot of publishers went to create websites focusing on this keyword, dreaming that they can get rich quick
However, Publishers who built sites on the topic NEVER saw the $105 per click, and were lucky if their sites got them $1 per click.
What's missing in your picture is SMART PRICING -- the big unknown in advertising (at least to the publishers). Adsense uses it, as well as Chitika.com. I think Kontera now has their form of smart pricing as well.
Smart pricing can affect the pricing of the ads on your site. If the advertiser paid for $0.50/click - but your site is smartpriced - then the cost may be discounted lower (e.g. $0.25). So you may try to develop a site based on high paying keywords but if smartpricing gets to you, then you may not get as much per click as what you are expecting from your keywords.
Here is Google's explanation of smart pricing https://adwords.google.com/support/bin/answer.py?answer=9562&query=smart+pricing&topic=0&type=f
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Google's smart pricing feature automatically adjusts the cost of a keyword-targeted content click based on its effectiveness compared to a search click. So if our data shows that a click from a content page is less likely to turn into actionable business results -- such as online sales, registrations, phone calls, or newsletter signups -- we reduce the price you pay for that click.
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Another factor missing is the responsiveness of your audience to the ads
A travel website that provides information on travel to Spain will attract visitors looking for ways to arrange their travel and spend money on their vacation to Spain. Your site provides the info, but the ads will provide hotels, travel agencies, tourist destinations, car rentals -- ads that are likely to get the attention of the users of your site. This is a site that will most likely do well with Adsense. However, if you are a gaming website where the main purpose of the user is to play games on your site, then Adsense will not perform as well.