I've watched three different SaaS startups in Ho Chi Minh City burn through their seed money on custom-built features when off-the-shelf tools like Salesforce or HubSpot would have covered 80% of their needs. Software development is often a trap: we romanticize building our own stack, but the real product is the workflow you enable, not the code you write. What's your experience—do you regret choosing custom development over mature SaaS solutions?