I see problems with those proposals.
Lobbying can create problems because of undue influence. On the other hand, what about public interest lobby groups, such as the Sierra Club and civil rights organiztions which have actually educated legislators and caused them to enact legislation which is in the public interest? Rather than proscribing lobbying, it seems to me that lobbies for businesses should be prohibited from making campaign contributions. It is already illegal for politicians to receive gifts from lobbies, but it may well be that that proscription is inadequately enforced.
Also consider that businesses have just as much right to communicate with politicians as individual citizens have. Many of us individual citizens have written or 'phoned our political representatives regarding particular bills, so why shouldn't business be able to do the same?
Regarding tax breaks, exactly which tax breaks are you concerned with? Many tax breaks are established to motivate companies to act in the public interest. For many decades, our income tax system has been used as a motivating force to induce desired behavior. Tax breaks have been used to induce companies to hire minorities or to use minority-owned companies as subcontractors. They have also been used to induce companies to invest more money into research projects which are considered to be in the public interest or to invest in equipment to reduce pollution.
And how did you arrive at the figure of $2 million? What if a company has profits of $2 million, but on an investment of 100 times that $2 million? That would mean that the company is making only 1% on investment, which is totally inadequate. On the other hand, what about a company with an investment of $2 million that is making a profit of $2 million annually? That would be a return on investment of 100%!! And yet you would have the same restrictions on tax breaks on both?? Obviously that would not make sense. If you really want restrictions on tax breaks, the restrictions should be based on rate of return, not on the total amount of profit. Also, there are two ways to measure rate of return. It can be measured on investment or on sales. In theory, a company could have a return on investment of 100%, but yet have a return on sales of only 1%.
Eliminating tax breaks has an effect similar to increasing taxes, although it is not identical. If taxes on a company are increased, the money to pay the taxes has to come from some place. Where it comes from depends on a number of factors, including the elasticity of demand for the product. If the demand is not elastic, the company can pass the tax on to the consumer. If the demand is elastic, it cannot do that since sales would drop. So then, the taxes have to be paid either by reducing wages paid to employees or by reducing profits. If profits are reduced, growth may be impacted because of reduced incentive to invest, and that would not be desirable. Nor would it be desirable to reduce wages. In extreme cases, increasing the taxes on a company could make the business insufficiently profitable to justify its operation, in which case it might close down.
This isn't to say that your proposals are without merit. However, it is obvious that they would have to be more carefully thought out, else they would surely do more harm than good.
My degree is in business administration and I also have the equivalent of a minor in economics. That isn't to say that I totally and completely understand the ramifications of all proposals related to business and economics; no one does. That's why legislative bodies spend so much time modifying previous legislation - it hasn't worked as expected. The Sherman Anti-Trust Act, of about 1890, was our first anti-trust legislation. Since then, there have been other acts because the Sherman Act didn't work as well as hoped. This just goes to show the extreme difficulty of designing legislation to do what it is supposed to do - quite often it does not, sometimes even when the proposals have been designed and carefully examined by experts before being enacted. Sometimes legislation has the opposite effect of what was intended. Also, legislation can quickly become obsolete because of changing conditions.