First, let's look at how they are written, and then let's look at meaning. I think in general, 2-4 can be written better and more clearly. (You can still use "It is..." at the beginning, but this draws focus to the subject of the sentence ("the government.")) 1. The government is prioritizing the service sector, rather than investing in industry and production. 2. The government regards investing in industry and production subordinate to the service sector. 3.The government is making investment in industry and production subordinate to the service sector. 4.Investing in industry and production is subordinate to the service sector for the government. If you look at the sentences now, you can see the differences or nuances in meaning. If you want to be extremely detailed, 1 =/= (is not equal) in meaning to any of the other sentences, but 3 can be considered similar. (1 and 3 describe what the government is doing, ranking X higher than Y, or Y lower than X.) 2 is describing what the government thinks, which I don't think follows from the original sentence. Despite the word order, 4 is also what the government thinks. (It could be considered similar in meaning to 2.) So, while there are similarities between sentences, generally speaking, when looking at it in detail, they are not the same. These are my judgements. Hopefully this helps you in some way.

i think so

i think so