Shops has like 7 sphere effects now. If you are getting "locked out" by them then you are doing something wrong with your manabase and/or mana curve. There are about 1000 solid options for anti-artifact cards after you get a couple mana sources in play.
This is a very simplistic view of shops. You dont get locked out by sphere effects. You get locked out by sphere effects, revokers, wastelands, stripmine, chalice. That's 14 cards or roughly 25% of the deck attacking a mana base and your ability to cast spells. And 5 of those 14 cards are beating you down each turn putting a clock on you.
Add in 2-4 phyrexian metamorphs and those numbers just grow more.
To an extent you are right though about the mana base, but even that's not full proof. Shops can still wreck you. To be a bit more specific though:
- Don't break your fetches too early.
- When you do break fetches, try to get basic lands if you can as this limits them to 1 strip effect instead of 5
- If you must get a dual, get the one you can do w/out the most.
- Build your decks mana base to deal shops gameplan of mana denial. An extra land or two can go a long way.
What I disagree with Vaunghbros on is his comment that if you get locked out by shops sphere effects you did something wrong. No, shops is more than capable of locking out an opponent by turn 2 with a very short clock for recovery. It doesn't mean you did something wrong, especially when you are in game 3 on the draw against shops. They get to lead with one of their sphere effects and put you back on your heels. Buts its also not as helpless as others make it seem.