Glass bottles were very common in Germany, as there was a standing threat that a punitive deposit on single-use bottles would be introduced if the fraction of drinks sold in reusable bottles dropped too low.

Once that happened (fraction dropped, punitive deposit was introduced, and thus the threat was gone), glass bottles mostly disappeared.

This strongly indicates that there is some factor that makes them undesirable. My guess would be that the reverse logistics are so expensive that it doesn't make economical sense, which is also a good hint that it may not make sense ecologically either. Because you save the production of the bottles, but now you have to transport the heavy glass, twice, for each drink sold.