Dimension Breach Creation was an attractive upgrade track.
Ves had both rational and emotional reasons to choose it over the other options.
However, the biggest problem with this choice was not the uncertainty of finding a profitable dimension to breach, nor the amount of AP he needed to spend to unlock the ability to create a permanent dimensional tear.
It was exposure.
Ves had already attracted far too much attention. It would have been great if he was already a Star Designer, but he was still a Senior Mech Designer at this point!
There was only so much weirdness that people could tolerate. Becoming too outstanding in a short amount of time would cause a lot of people to develop feelings of jealousy, envy and greed.
The creation of dimensional tears that had the potential to provide a vast amount of valuable resources would also create major disruptions in the mech industry and many other sectors.