Ask HN: Is it perfect time for building SaaS business?

Venture Capitalist Tomasz Tunguz makes an analyse and say that it is perfect time for building SaaS startup.

There is no single reason for it. Enterprise values goes up, growth rate of company in this market is good, etc.

Full article and graphs is here http://tomtunguz.com/saas-ipo-trends/

What you think? You ever try SaaS startup? Now is the perfect time for it?