To make matters worse, while the dBASE for DOS clone (FoxBase) copied dBASE closely, the Windows version of this product was developed without an existing dBASE for Windows model. One of dBASE for DOS's strengths was multi-vendor support, and this was lost in the various Windows xBase products. Borland's Visual dBASE for Windows couldn't run Microsoft's Foxbase for Windows programs and vice versa. Faced with a fragmented market and the need to rewrite programs to take advantage of Windows, there was little incentive for xBase users to stay loyal to the brand they'd used for DOS.