Which is partly due to their actual problem solving strategy. Instead of fix the problem with X 3.4, they bought the company that makes Y so they could use that

Which is partly due to their actual problem solving strategy. Instead of fix the problem with X 3.4, they bought the company that makes Y so they could use that solution. But Y has it's own problems of course. And even if it didn't X should have just been developed along with something like Y. Though it's unlikely that X was even made by IBM anyways.