Sometimes and may be not this time, old manufacturing equipment for discontinued items is bought up cheap at scrap prices by some small company in a foreign country like India or somewhere similar and set up on a small scale to provide continued manufacturing of the discontinued products as long as there is still a demand for the product.
There should still be money to be made from the sale of these bulbs.
As long as the T17s have been in production and used around the world I would think there would still be a demand for them.
If you had several large warehouses for example that had all PGs that were working just fine all those years and now can't get bulbs so you have to replace all your perfectly good working fixtures for no other reason than you can't get bulbs, this could be a big hit to your bottom line.
I guess you could say the same thing about the T12 ban, but in the case of the T12 ban there was plenty of advance warning.
But with this T17 thing, it is just, bang/gone.
GE could have done better with this.
But this is the way business seems to be conducted today.
Also the T12 ban did not affect any T17 bulbs as far as I can tell.
It is not even mentioned in the bulb ban.
I think it was more a decision from the GE bean counters than anything else.
And the bulb ban was the perfect excuse just to dump the whole thing.
Instead of moving production to China like everyone else does, they just junked it out is what looks like what happened.