This is a topic dear to my heart and I think the difficulty between you and Ellipsis, Geezer, is that (correct me if I’m wrong) your calculations assume that in 14m draws, every combination of six numbers will occur. So, if you stick to your six numbers and enter the draw 14m times you are assured of a win.
Of course this is not so because, as each draw is independent of all those that have gone previously, an identical set of six numbers can be drawn more than once.
As you say “...for all the combinations to get drawn out could take forever.” Yes it could. There is no guarantee that every combination will eventually be drawn however many draws are made (in the same way that there is no guarantee that you will eventually throw a six no matter how many times a die is rolled). It could also take precisely 13,983,816 draws (the number of combinations of six in forty-nine). To go back to the dice analogy, every time a die is rolled there is a one in six chance that a six will result. However, there is no guarantee that a six will ever be thrown no matter how many times it is rolled, but the odds against rolling a six AT ANY TIME increases as the number of rolls increases. With six rolls you do not have a 100% chance of rolling a six, but about 67%. With 12 rolls about 88%. This percentage increases as the number of rolls increases and steadily approaches 100% but never reaches it.
The comment that “numbers 1,2,3,4,5 and 6 have never occurred anywhere is probably true. But you might also say that the numbers 8,12, 34, 41, 43 and 49 have also never occurred. It’s just that nobody notices non-sequential combinations.