The problem is Trump is a pragmatist who leans right, not an ideological conservative, and so he finds what he believes are the best answers to problems regardless of whether other people think these answers are conservative or liberal and he has no patience for others who are not pragmatists.
At first, I thought the same thing about Trump. However, I have watched him swing from right to left on many of the issues he campaigned in the primaries on. For instance, his original tax plan was lauded by many conservatives as great but he has since come out and said the cuts for top marginal rates would be eliminated because we have to "tax the rich" ...a radical left-wing meme. During the debates, he made the argument that increasing the minimum wage would cost jobs and he would not favor it... again, conservatives applauded. Jump ahead to his more recent comments that he wants to increase the minimum wage to $10/hr because "we've got to help people". Another liberal meme. How are you "helping people" by doing something that will kill jobs?
I didn't have a problem with someone who isn't an "ideologue" but I have a real problem with people who are manipulative and say whatever they need at the moment in order to get votes. Like endorsing more ethanol subsidies when they are a prime example of wasteful government corporate handouts that we need to eliminate in order to cut spending.
Trump is telegraphing that he does not plan to govern as a conservative in any fiscal sense. And I really do think that is his "strategy" behind attacking Cruz. He knows that he plans to govern from the left and his biggest opposition will be true conservatives like Cruz. He's trying to eliminate his opposition... take them out now, so they won't have a voice later.
Those who have sold their souls to support Trump have abandoned Conservative principles. This will not end well for them.