Opensource always favors quality as they do not see the marketing advantages by giving visible features. Generally opensource developer is motivated by peer reviews therefore it has approval tendency from their peers. In compare to their counter parts in commercial software opensource community attracts very bright and motivated developers, who are frequently unpaid yet very disciplined one. They are not part of corporate culture and do not always targeted higher salaries and wanted to move into management, so they are most experienced one in their respective industries.
Stability
In business environment users never think any changes in software until the job changes or more efficient process is discovered. They need some sort of stability to keep their operations continue. Opensource provides this stability as there upgrades are optional not compulsory as in case of proprietary software where commercial vendors exerts pressure to frequently upgrade the software. They often use the tactics to move towards the new file format or withdraw the support of bug fixing in older versions. In use of opensource, users are saved from isolation and victimization. Users are free to take upgrade or not. No indirect tactics force them to do it. In real world every business is changing and opensource has to change to meet the changing requirement of the business so it changes but slowly and in favor of business not the vendors. There are less issues of version compatibility or the file format issues in opensource.
Auditability
Commercial vendors often claim their quality, security, freedom from backdoors, adherence to standards and flexibility in case of future changes. But who will audit their claims? Their paid auditors? Since there is no availability of source code these claims remains mere words only. In case of opensource there is complete Audit ability. Any one can conduct rigorous checking over the claims made by developers. In future there would be a standard practice to gauge the claims means complete Auditability due to excessive use of opensource. You can discover backdoor accounts, security threats, etc. with opensource not in proprietary software.
Cost
It is free software means free from Total Cost of Ownership (TCO). We can say that: ->It has possibly zero purchase price ->Opensource potentially no need to account for copies in use, reducing administrative overhead ->There is almost no or reduced need for regular upgrades so lower/nil upgrade fees and lower management costs ->It claims longer uptimes and reduced need for expensive systems administrators ->It has near-zero vulnerability to viruses eliminating need for virus checking, data loss and downtime ->Opensource has lower vulnerability to security breaches and hack attacks reducing systems administration load ->It has ability to prolong life of older hardware while retaining performance ->Better adherence to standards permits competition in the market, reducing vendor lock-in and consequent monopoly pricing ->Availability of source code provides greater continuity and security against ->Financial collapse of vendors of key products ->Vendors choosing to withdraw support for unprofitable products ->Protection against being required to fit your IT strategy to the cash needs of your software supplier