I'm sure they like write offs, but many kinds strike me as inherent and necessary, not all, but many.
Corporations often spend money in hopes of making more money later, capital improvements, hiring, etc. Is that kind of thing an expense or what? A for profit company has EBITA (earnings before income tax) and then after tax earnings, which generally differ by a factor of 2 or more. Currently, if they build a new factory they can write off the entire expense. In the past, that write off has been amortized over several years.
Then there is the "R&D tax credit", which gets gamed in the US, but at least supports companies doing "R&D", which the government views as a good thing. Then there are SALT for corporations which are treated as expenses. The list is longer than I have any idea about.
I think any sudden change would cause disruptions, maybe it would end being OK, I don't know, it's beyond my PG.