Wall Street only wants aggressive growth. All growth is good, more growth is better. So what if it's not sustainable long-term?
Companies are pressured to cut costs to the bone in order to post double-digit profit growth every year. Capital expenditures are discouraged, since they take away from EPS. Enormous executive compensation is perfectly OK, as are share buybacks, but don't dare invest that money in R&D.
Once the company becomes unsustainable and that aggressive growth catches up to it, losses mount. Wall Street insiders saw this coming already and shorted the shares. The stock price takes a big dive, resulting in mass layoffs and resignations of anyone with talent. The now destroyed company is either taken private or massively restructured, often nearing bankruptcy.